{"id":3015,"date":"2026-02-13T14:11:56","date_gmt":"2026-02-13T06:11:56","guid":{"rendered":"https:\/\/www.go2posts.com\/fr\/mastering-uml-use-case-relationships-the-power-and-peril-of-include-and-extend\/"},"modified":"2026-02-13T14:11:56","modified_gmt":"2026-02-13T06:11:56","slug":"mastering-uml-use-case-relationships-the-power-and-peril-of-include-and-extend","status":"publish","type":"post","link":"https:\/\/www.go2posts.com\/fr\/mastering-uml-use-case-relationships-the-power-and-peril-of-include-and-extend\/","title":{"rendered":"Maitriser les relations de cas d&#8217;utilisation UML : la puissance et le danger de \u00abinclude\u00bb et \u00abextend\u00bb"},"content":{"rendered":"<p data-nodeid=\"2173\">Dans le monde des exigences logicielles et de la mod\u00e9lisation des syst\u00e8mes,\u00a0<strong data-nodeid=\"2551\">UML (<a href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-uml\/\">Langage de mod\u00e9lisation unifi\u00e9<\/a>)<\/strong> reste une pierre angulaire pour visualiser le comportement des syst\u00e8mes. Parmi ses fonctionnalit\u00e9s les plus puissantes mais souvent mal comprises figurent les <strong data-nodeid=\"2552\">\u00abinclude\u00bb <\/strong>et\u00a0 <strong data-nodeid=\"2553\">\u00abextend\u00bb <\/strong>\u00a0relations entre les cas d&#8217;utilisation. Ces m\u00e9canismes sont con\u00e7us pour\u00a0<strong data-nodeid=\"2554\">r\u00e9duire la duplication<\/strong>,\u00a0<strong data-nodeid=\"2555\">g\u00e9rer la variabilit\u00e9<\/strong>, et\u00a0<strong data-nodeid=\"2556\">am\u00e9liorer la modularit\u00e9<\/strong>\u00a0dans les mod\u00e8les de cas d&#8217;utilisation. Toutefois, leur mauvaise utilisation est fr\u00e9quente \u2014 entra\u00eenant des diagrammes excessivement complexes, de la confusion parmi les parties prenantes et une perte de concentration sur la valeur pour l&#8217;utilisateur.<\/p>\n<p id=\"LjKeRGk\"><img fetchpriority=\"high\" alt=\"\" class=\"alignnone size-full wp-image-2744\" decoding=\"async\" fetchpriority=\"high\" height=\"583\" sizes=\"(max-width: 629px) 100vw, 629px\" src=\"https:\/\/www.go2posts.com\/wp-content\/uploads\/2026\/02\/img_698c52950b097.png\" srcset=\"https:\/\/www.go2posts.com\/wp-content\/uploads\/2026\/02\/img_698c52950b097.png 629w, https:\/\/www.go2posts.com\/wp-content\/uploads\/2026\/02\/img_698c52950b097-300x278.png 300w\" width=\"629\"\/><\/p>\n<p>\u00a0<\/p>\n<p>\u00a0<\/p>\n<p data-nodeid=\"2174\">Cet article fournit un guide\u00a0<strong data-nodeid=\"2570\">complet, pratique et appuy\u00e9 par des experts<\/strong>\u00a0pour comprendre, appliquer et \u00e9viter les pi\u00e8ges courants de \u00abinclude\u00bb et \u00abextend\u00bb. Nous explorerons leurs\u00a0<strong data-nodeid=\"2571\">v\u00e9ritables s\u00e9mantiques<\/strong>, les comparer c\u00f4te \u00e0 c\u00f4te, examiner pourquoi elles tombent dans le m\u00eame pi\u00e8ge que les DFD (d\u00e9composition fonctionnelle), et proposer\u00a0<strong data-nodeid=\"2572\">meilleures pratiques modernes<\/strong>\u00a0pour les \u00e9quipes 2025\u20132026 \u2014 en particulier celles travaillant dans des environnements agiles, lean ou hybrides.<\/p>\n<hr data-nodeid=\"2175\"\/>\n<h2 data-nodeid=\"2176\">\ud83d\udd39\u00a0<strong data-nodeid=\"2582\">S\u00e9mantiques fondamentales : ce que signifient vraiment \u00abinclude\u00bb et \u00abextend\u00bb\u00a0<em data-nodeid=\"2581\">Vraiment<\/em>\u00a0signifient<\/strong><\/h2>\n<h3 data-nodeid=\"2177\">\u2705\u00a0<strong data-nodeid=\"2591\">\u00abinclude\u00bb : R\u00e9utilisation obligatoire \u2013 Le sous-flot \u00abtoujours requis\u00bb<\/strong><\/h3>\n<p data-nodeid=\"2178\"><strong data-nodeid=\"2602\">D\u00e9finition<\/strong>:<br \/>\nLa relation \u00abinclure\u00bb repr\u00e9sente un flux secondaire obligatoire qui est factoris\u00e9 pour \u00eatre r\u00e9utilis\u00e9 dans plusieurs cas d&#8217;utilisation.<strong data-nodeid=\"2603\">obligatoire, toujours ex\u00e9cut\u00e9<\/strong>flux secondaire qui est factoris\u00e9 pour \u00eatre r\u00e9utilis\u00e9 dans plusieurs cas d&#8217;utilisation.<\/p>\n<h4 data-nodeid=\"2179\">\ud83d\udccc Caract\u00e9ristiques principales :<\/h4>\n<ul data-nodeid=\"2180\">\n<li data-nodeid=\"2181\">\n<p data-nodeid=\"2182\"><strong data-nodeid=\"2609\">Toujours ex\u00e9cut\u00e9<\/strong>: Le cas d&#8217;utilisation inclus s&#8217;ex\u00e9cute \u00e0 chaque fois que le cas d&#8217;utilisation de base est appel\u00e9.<\/p>\n<\/li>\n<li data-nodeid=\"2183\">\n<p data-nodeid=\"2184\"><strong data-nodeid=\"2614\">Le cas d&#8217;utilisation de base est incomplet sans lui<\/strong>: Sans le comportement inclus, le cas d&#8217;utilisation de base ne peut pas accomplir sa finalit\u00e9.<\/p>\n<\/li>\n<li data-nodeid=\"2185\">\n<p data-nodeid=\"2186\"><strong data-nodeid=\"2623\">Direction de d\u00e9pendance<\/strong>: La fl\u00e8che pointe<strong data-nodeid=\"2624\">du cas de base \u2192 inclus<\/strong>.<\/p>\n<\/li>\n<li data-nodeid=\"2187\">\n<p data-nodeid=\"2188\"><strong data-nodeid=\"2633\">Signification autonome<\/strong>: Le cas d&#8217;utilisation inclus est g\u00e9n\u00e9ralement<strong data-nodeid=\"2634\">sans sens seul<\/strong>\u2014il n&#8217;a de sens que comme partie d&#8217;un processus plus large.<\/p>\n<\/li>\n<li data-nodeid=\"2189\">\n<p data-nodeid=\"2190\"><strong data-nodeid=\"2647\">Analogie<\/strong>: Comme un appel de<strong data-nodeid=\"2648\">fonction<\/strong>ou<strong data-nodeid=\"2649\">sous-routine<\/strong>en programmation \u2014 essentiel pour la routine principale.<\/p>\n<\/li>\n<\/ul>\n<h4 data-nodeid=\"2191\">\ud83e\udde0 Mn\u00e9motechnique classique :<\/h4>\n<blockquote data-nodeid=\"2192\">\n<p data-nodeid=\"2193\"><em data-nodeid=\"2681\">\u00ab Pour faire<strong data-nodeid=\"2679\">Connexion<\/strong>, vous devez<strong data-nodeid=\"2680\">Authentifier l&#8217;utilisateur<\/strong>.\u201d<\/em><br \/>\n<em data-nodeid=\"2684\">\u00ab Pour faire<strong data-nodeid=\"2682\">Retirer de l&#8217;argent<\/strong>, vous devez\u00a0<strong data-nodeid=\"2683\">Valider le code PIN<\/strong>.\u201d<\/em><\/p>\n<\/blockquote>\n<p data-nodeid=\"2194\">Ce sont des\u00a0<strong data-nodeid=\"2690\">\u00e9tapes non n\u00e9gociables<\/strong>. Vous ne pouvez pas vous connecter sans authentification. Vous ne pouvez pas retirer de l&#8217;argent sans valider le code PIN.<\/p>\n<h4 data-nodeid=\"2195\">\ud83d\udca1 Quand l&#8217;utiliser :<\/h4>\n<ul data-nodeid=\"2196\">\n<li data-nodeid=\"2197\">\n<p data-nodeid=\"2198\">Lorsqu&#8217;une\u00a0<strong data-nodeid=\"2701\">comportement commun, complexe et r\u00e9utilisable<\/strong>\u00a0appara\u00eet dans\u00a0<strong data-nodeid=\"2702\">deux ou plusieurs<\/strong>\u00a0cas d&#8217;utilisation.<\/p>\n<\/li>\n<li data-nodeid=\"2199\">\n<p data-nodeid=\"2200\">Exemples :<\/p>\n<ul data-nodeid=\"2201\">\n<li data-nodeid=\"2202\">\n<p data-nodeid=\"2203\"><code data-backticks=\"1\" data-nodeid=\"2704\">Authentifier l'utilisateur<\/code><\/p>\n<\/li>\n<li data-nodeid=\"2204\">\n<p data-nodeid=\"2205\"><code data-backticks=\"1\" data-nodeid=\"2705\">Enregistrer le journal d'audit<\/code><\/p>\n<\/li>\n<li data-nodeid=\"2206\">\n<p data-nodeid=\"2207\"><code data-backticks=\"1\" data-nodeid=\"2706\">Envoyer une notification<\/code><\/p>\n<\/li>\n<li data-nodeid=\"2208\">\n<p data-nodeid=\"2209\"><code data-backticks=\"1\" data-nodeid=\"2707\">Valider le format d'entr\u00e9e<\/code><\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<blockquote data-nodeid=\"2210\">\n<p data-nodeid=\"2211\">\u2705\u00a0<strong data-nodeid=\"2725\">R\u00e8gle de base<\/strong> : Utilisez \u00ab inclure \u00bb uniquement lorsque le comportement r\u00e9utilis\u00e9 est\u00a0<strong data-nodeid=\"2726\">important<\/strong>,\u00a0<strong data-nodeid=\"2727\">non trivial<\/strong>, et appara\u00eet dans\u00a0<strong data-nodeid=\"2728\">\u22652\u20133<\/strong>\u00a0cas d&#8217;utilisation.<\/p>\n<\/blockquote>\n<hr data-nodeid=\"2212\"\/>\n<h3 data-nodeid=\"2213\">\u2705\u00a0<strong data-nodeid=\"2736\">\u00ab \u00e9tendre \u00bb : Variation facultative \u2013 Le \u00ab compl\u00e9ment conditionnel \u00bb<\/strong><\/h3>\n<p data-nodeid=\"2214\"><strong data-nodeid=\"2755\">D\u00e9finition<\/strong>:<br \/>\nLa relation \u00ab\u00e9tendre\u00bb d\u00e9finit<strong data-nodeid=\"2756\">optionnel, conditionnel ou variant<\/strong>comportement qui<strong data-nodeid=\"2757\">se connecte \u00e0<\/strong>un point d&#8217;extension sp\u00e9cifique<strong data-nodeid=\"2758\">point d&#8217;extension<\/strong>du cas d&#8217;utilisation de base.<\/p>\n<h4 data-nodeid=\"2215\">\ud83d\udccc Caract\u00e9ristiques principales :<\/h4>\n<ul data-nodeid=\"2216\">\n<li data-nodeid=\"2217\">\n<p data-nodeid=\"2218\"><strong data-nodeid=\"2764\">Ex\u00e9cut\u00e9 conditionnellement<\/strong>: Ne s&#8217;ex\u00e9cute que dans certaines circonstances.<\/p>\n<\/li>\n<li data-nodeid=\"2219\">\n<p data-nodeid=\"2220\"><strong data-nodeid=\"2769\">Le cas d&#8217;utilisation de base est complet en lui-m\u00eame<\/strong>: Le flux normal fonctionne sans l&#8217;extension.<\/p>\n<\/li>\n<li data-nodeid=\"2221\">\n<p data-nodeid=\"2222\"><strong data-nodeid=\"2778\">Direction de d\u00e9pendance<\/strong>: La fl\u00e8che pointe<strong data-nodeid=\"2779\">de l&#8217;extension \u2192 base<\/strong> (vers l&#8217;arri\u00e8re).<\/p>\n<\/li>\n<li data-nodeid=\"2223\">\n<p data-nodeid=\"2224\"><strong data-nodeid=\"2792\">Signification autonome<\/strong>: Le cas d&#8217;utilisation d&#8217;extension est<strong data-nodeid=\"2793\">presque jamais significatif en lui-m\u00eame<\/strong>\u2014il n&#8217;a de sens qu&#8217;<em data-nodeid=\"2794\">dans son contexte<\/em>.<\/p>\n<\/li>\n<li data-nodeid=\"2225\">\n<p data-nodeid=\"2226\"><strong data-nodeid=\"2811\">Analogie<\/strong>: Comme un<strong data-nodeid=\"2812\">crochet<\/strong>,\u00a0<strong data-nodeid=\"2813\">plugin<\/strong>, ou un<strong data-nodeid=\"2814\">conseil de programmation orient\u00e9e aspect (AOP)<\/strong>\u2014il ajoute un comportement \u00e0 un point d\u00e9fini.<\/p>\n<\/li>\n<\/ul>\n<h4 data-nodeid=\"2227\">\ud83e\udde0 Mn\u00e9motechnique classique :<\/h4>\n<blockquote data-nodeid=\"2228\">\n<p data-nodeid=\"2229\"><em data-nodeid=\"2855\">\u00ab Pendant que vous faites\u00a0<strong data-nodeid=\"2852\">R\u00e9server un vol<\/strong>, vous\u00a0<strong data-nodeid=\"2853\">pourriez<\/strong>vouloir\u00a0<strong data-nodeid=\"2854\">S\u00e9lectionner un si\u00e8ge pr\u00e9f\u00e9r\u00e9<\/strong>.\u201d<\/em><br \/>\n<em data-nodeid=\"2859\">\u00ab Pendant que vous faites\u00a0<strong data-nodeid=\"2856\">Payer par carte de cr\u00e9dit<\/strong>, vous\u00a0<strong data-nodeid=\"2857\">pourriez<\/strong>devoir\u00a0<strong data-nodeid=\"2858\">Saisir le code 3D Secure<\/strong>.\u201d<\/em><\/p>\n<\/blockquote>\n<p data-nodeid=\"2230\">Ce sont des am\u00e9liorations facultatives<strong data-nodeid=\"2865\">am\u00e9liorations facultatives<\/strong>\u2014non obligatoires pour le flux principal.<\/p>\n<h4 data-nodeid=\"2231\">\ud83d\udca1 Quand l&#8217;utiliser :<\/h4>\n<ul data-nodeid=\"2232\">\n<li data-nodeid=\"2233\">\n<p data-nodeid=\"2234\">Pour mod\u00e9liser<strong data-nodeid=\"2880\">des chemins alternatifs<\/strong>,\u00a0<strong data-nodeid=\"2881\">des exceptions<\/strong>, ou\u00a0<strong data-nodeid=\"2882\">des fonctionnalit\u00e9s facultatives<\/strong>.<\/p>\n<\/li>\n<li data-nodeid=\"2235\">\n<p data-nodeid=\"2236\">Lorsqu&#8217;un cas d&#8217;utilisation pr\u00e9sente<strong data-nodeid=\"2888\">des comportements vari\u00e9s<\/strong>bas\u00e9s sur des conditions (par exemple, r\u00f4les des utilisateurs, \u00e9tats du syst\u00e8me, pr\u00e9f\u00e9rences).<\/p>\n<\/li>\n<li data-nodeid=\"2237\">\n<p data-nodeid=\"2238\">Exemples :<\/p>\n<ul data-nodeid=\"2239\">\n<li data-nodeid=\"2240\">\n<p data-nodeid=\"2241\"><code data-backticks=\"1\" data-nodeid=\"2890\">Appliquer la r\u00e9duction<\/code>\u00a0(\u00e9tend\u00a0<code data-backticks=\"1\" data-nodeid=\"2892\">Passer la commande<\/code>)<\/p>\n<\/li>\n<li data-nodeid=\"2242\">\n<p data-nodeid=\"2243\"><code data-backticks=\"1\" data-nodeid=\"2894\">Demander un remboursement<\/code>\u00a0(\u00e9tend\u00a0<code data-backticks=\"1\" data-nodeid=\"2896\">Traiter le paiement<\/code>)<\/p>\n<\/li>\n<li data-nodeid=\"2244\">\n<p data-nodeid=\"2245\"><code data-backticks=\"1\" data-nodeid=\"2898\">G\u00e9n\u00e9rer un re\u00e7u PDF<\/code>\u00a0(\u00e9tend\u00a0<code data-backticks=\"1\" data-nodeid=\"2900\">Terminer la transaction<\/code>)<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<blockquote data-nodeid=\"2246\">\n<p data-nodeid=\"2247\">\u2705\u00a0<strong data-nodeid=\"2915\">R\u00e8gle de base<\/strong>: Utilisez \u00ab\u00e9tendre\u00bb avec parcimonie \u2014 uniquement pour\u00a0<strong data-nodeid=\"2916\">variations significatives<\/strong>\u00a0avec des\u00a0<strong data-nodeid=\"2917\">points d&#8217;extension<\/strong>.<\/p>\n<\/blockquote>\n<hr data-nodeid=\"2248\"\/>\n<h2 data-nodeid=\"2249\">\ud83d\udd0d Comparaison rapide : \u00abinclure\u00bb vs \u00ab\u00e9tendre\u00bb<\/h2>\n<table data-nodeid=\"2251\">\n<thead data-nodeid=\"2252\">\n<tr data-nodeid=\"2253\">\n<th data-nodeid=\"2255\">Aspect<\/th>\n<th data-nodeid=\"2256\"><strong data-nodeid=\"2923\">\u00abinclure\u00bb<\/strong><\/th>\n<th data-nodeid=\"2257\"><strong data-nodeid=\"2927\">\u00ab\u00e9tendre\u00bb<\/strong><\/th>\n<\/tr>\n<\/thead>\n<tbody data-nodeid=\"2261\">\n<tr data-nodeid=\"2262\">\n<td data-nodeid=\"2263\"><strong data-nodeid=\"2931\">Ex\u00e9cution<\/strong><\/td>\n<td data-nodeid=\"2264\">Toujours<\/td>\n<td data-nodeid=\"2265\">Parfois \/ de mani\u00e8re conditionnelle<\/td>\n<\/tr>\n<tr data-nodeid=\"2266\">\n<td data-nodeid=\"2267\"><strong data-nodeid=\"2937\">Le UC de base est complet seul ?<\/strong><\/td>\n<td data-nodeid=\"2268\">\u274c Non \u2014 d\u00e9pend de ce qui est inclus<\/td>\n<td data-nodeid=\"2269\">\u2705 Oui \u2014 complet sans extensions<\/td>\n<\/tr>\n<tr data-nodeid=\"2270\">\n<td data-nodeid=\"2271\"><strong data-nodeid=\"2943\">Direction de la d\u00e9pendance<\/strong><\/td>\n<td data-nodeid=\"2272\">Base \u2192 Inclus<\/td>\n<td data-nodeid=\"2273\">Extension \u2192 Base<\/td>\n<\/tr>\n<tr data-nodeid=\"2274\">\n<td data-nodeid=\"2275\"><strong data-nodeid=\"2949\">Direction de la fl\u00e8che<\/strong><\/td>\n<td data-nodeid=\"2276\">Pointe vers le cas d&#8217;utilisation inclus<\/td>\n<td data-nodeid=\"2277\">Pointe vers le cas d&#8217;utilisation de base<\/td>\n<\/tr>\n<tr data-nodeid=\"2278\">\n<td data-nodeid=\"2279\"><strong data-nodeid=\"2955\">Objectif principal<\/strong><\/td>\n<td data-nodeid=\"2280\">R\u00e9utilisation obligatoire, \u00e9tapes partag\u00e9es<\/td>\n<td data-nodeid=\"2281\">G\u00e9rer les flux optionnels ou variants<\/td>\n<\/tr>\n<tr data-nodeid=\"2282\">\n<td data-nodeid=\"2283\"><strong data-nodeid=\"2961\">Analogie<\/strong><\/td>\n<td data-nodeid=\"2284\">Appel de fonction \/ sous-routine<\/td>\n<td data-nodeid=\"2285\">Point d&#8217;ancrage \/ plugin \/ conseil AOP<\/td>\n<\/tr>\n<tr data-nodeid=\"2286\">\n<td data-nodeid=\"2287\"><strong data-nodeid=\"2967\">Signification autonome ?<\/strong><\/td>\n<td data-nodeid=\"2288\">Rarement<\/td>\n<td data-nodeid=\"2289\">Presque jamais<\/td>\n<\/tr>\n<tr data-nodeid=\"2290\">\n<td data-nodeid=\"2291\"><strong data-nodeid=\"2973\">Meilleur pour<\/strong><\/td>\n<td data-nodeid=\"2292\">Pr\u00e9occupations r\u00e9utilisables, complexes et transversales<\/td>\n<td data-nodeid=\"2293\">Comportement conditionnel, optionnel ou alternatif<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr data-nodeid=\"2294\"\/>\n<h2 data-nodeid=\"2295\">\u26a0\ufe0f Le \u00ab pi\u00e8ge de la d\u00e9composition \u00bb : Pourquoi les diagrammes de cas d&#8217;utilisation d\u00e9raillent<\/h2>\n<p data-nodeid=\"2296\">Tout comme<strong data-nodeid=\"2998\">DFD (diagrammes de flux de donn\u00e9es)<\/strong>souffrent du<strong data-nodeid=\"2999\">pi\u00e8ge de la d\u00e9composition fonctionnelle<\/strong>, les diagrammes de cas d&#8217;utilisation sont<strong data-nodeid=\"3000\">sujets \u00e0 la m\u00eame maladie mortelle<\/strong>:\u00a0<strong data-nodeid=\"3001\">sur-d\u00e9composition<\/strong>.<\/p>\n<h3 data-nodeid=\"2297\">\ud83d\udcc9 Le pi\u00e8ge de la d\u00e9composition fonctionnelle du DFD (r\u00e9sum\u00e9) :<\/h3>\n<ul data-nodeid=\"2298\">\n<li data-nodeid=\"2299\">\n<p data-nodeid=\"2300\">Les \u00e9quipes continuent de diviser les processus en bulles de plus en plus petites.<\/p>\n<\/li>\n<li data-nodeid=\"2301\">\n<p data-nodeid=\"2302\">Les diagrammes explodent en dizaines de petites fonctions de bas niveau.<\/p>\n<\/li>\n<li data-nodeid=\"2303\">\n<p data-nodeid=\"2304\">Le\u00a0<strong data-nodeid=\"3010\">le but initial<\/strong>\u2014livrer de la valeur \u00e0 l&#8217;utilisateur\u2014est perdu.<\/p>\n<\/li>\n<li data-nodeid=\"2305\">\n<p data-nodeid=\"2306\">Finissent par ressembler \u00e0\u00a0<strong data-nodeid=\"3020\">pseudo-code<\/strong>\u00a0ou\u00a0<strong data-nodeid=\"3021\">conception d&#8217;algorithme interne<\/strong>, pas le comportement de l&#8217;utilisateur.<\/p>\n<\/li>\n<\/ul>\n<h3 data-nodeid=\"2307\">\ud83e\udde8 Le cas d&#8217;utilisation \u00ab maladie de la d\u00e9composition fonctionnelle \u00bb :<\/h3>\n<ul data-nodeid=\"2308\">\n<li data-nodeid=\"2309\">\n<p data-nodeid=\"2310\">Chaque petite \u00e9tape devient un cas d&#8217;utilisation \u00e0 part enti\u00e8re :<\/p>\n<ul data-nodeid=\"2311\">\n<li data-nodeid=\"2312\">\n<p data-nodeid=\"2313\"><code data-backticks=\"1\" data-nodeid=\"3028\">Saisir le nom d'utilisateur<\/code><\/p>\n<\/li>\n<li data-nodeid=\"2314\">\n<p data-nodeid=\"2315\"><code data-backticks=\"1\" data-nodeid=\"3029\">Saisir le mot de passe<\/code><\/p>\n<\/li>\n<li data-nodeid=\"2316\">\n<p data-nodeid=\"2317\"><code data-backticks=\"1\" data-nodeid=\"3030\">Cliquer sur le bouton de connexion<\/code><\/p>\n<\/li>\n<li data-nodeid=\"2318\">\n<p data-nodeid=\"2319\"><code data-backticks=\"1\" data-nodeid=\"3031\">Valider le format<\/code><\/p>\n<\/li>\n<li data-nodeid=\"2320\">\n<p data-nodeid=\"2321\"><code data-backticks=\"1\" data-nodeid=\"3032\">Afficher le message d'erreur<\/code><\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li data-nodeid=\"2322\">\n<p data-nodeid=\"2323\">\u00abinclure\u00bb est appliqu\u00e9\u00a0<strong data-nodeid=\"3038\">lib\u00e9ralement<\/strong>\u00a0pour d\u00e9composer chaque action.<\/p>\n<\/li>\n<li data-nodeid=\"2324\">\n<p data-nodeid=\"2325\">R\u00e9sultat : un\u00a0<strong data-nodeid=\"3044\">hi\u00e9rarchie profonde<\/strong>\u00a0de cas d&#8217;utilisation (A \u2192 B \u2192 C \u2192 D\u2026) sans objectif clair de l&#8217;acteur.<\/p>\n<\/li>\n<li data-nodeid=\"2326\">\n<p data-nodeid=\"2327\">Les diagrammes deviennent\u00a0<strong data-nodeid=\"3058\">impossible \u00e0 maintenir<\/strong>,\u00a0<strong data-nodeid=\"3059\">confus<\/strong>, et\u00a0<strong data-nodeid=\"3060\">inutile<\/strong>\u00a0pour les parties prenantes.<\/p>\n<\/li>\n<\/ul>\n<blockquote data-nodeid=\"2328\">\n<p data-nodeid=\"2329\">\u274c\u00a0<strong data-nodeid=\"3074\">Drapeau rouge<\/strong>: Si votre diagramme de cas d&#8217;utilisation comporte\u00a0<strong data-nodeid=\"3075\">plus de 15 \u00e0 20 cas d&#8217;utilisation<\/strong>, ou si\u00a0<strong data-nodeid=\"3076\">la plupart des cas d&#8217;utilisation de base comportent entre 2 et 4 \u00e9tapes<\/strong>, vous \u00eates probablement dans le pi\u00e8ge.<\/p>\n<\/blockquote>\n<hr data-nodeid=\"2330\"\/>\n<h2 data-nodeid=\"2331\">\ud83d\udee0\ufe0f Pourquoi cela se produit : erreurs courantes et malentendus<\/h2>\n<table data-nodeid=\"2333\">\n<thead data-nodeid=\"2334\">\n<tr data-nodeid=\"2335\">\n<th data-nodeid=\"2337\">Pi\u00e8ge<\/th>\n<th data-nodeid=\"2338\">Explication<\/th>\n<th data-nodeid=\"2339\">Comment l&#8217;\u00e9viter<\/th>\n<\/tr>\n<\/thead>\n<tbody data-nodeid=\"2343\">\n<tr data-nodeid=\"2344\">\n<td data-nodeid=\"2345\"><strong data-nodeid=\"3086\">Surutilisation de \u00abinclude\u00bb<\/strong><\/td>\n<td data-nodeid=\"2346\">Consid\u00e9rer chaque sous-\u00e9tape comme un cas d&#8217;utilisation r\u00e9utilisable.<\/td>\n<td data-nodeid=\"2347\">Utilisez uniquement \u00abinclude\u00bb pour\u00a0<strong data-nodeid=\"3101\">important<\/strong>,\u00a0<strong data-nodeid=\"3102\">r\u00e9utilisable<\/strong>,\u00a0<strong data-nodeid=\"3103\">transversal<\/strong>\u00a0comportements (par exemple, authentification, journalisation).<\/td>\n<\/tr>\n<tr data-nodeid=\"2348\">\n<td data-nodeid=\"2349\"><strong data-nodeid=\"3107\">Confusion sur la direction de la fl\u00e8che<\/strong><\/td>\n<td data-nodeid=\"2350\">Dessiner les fl\u00e8ches \u00abinclude\u00bb \u00e0 l&#8217;envers (base \u2190 inclus) ou les fl\u00e8ches \u00abextend\u00bb en avant.<\/td>\n<td data-nodeid=\"2351\">Souvenez-vous :\u00a0<strong data-nodeid=\"3118\">include = base \u2192 inclus<\/strong>;\u00a0<strong data-nodeid=\"3119\">extend = en cours d&#8217;extension \u2192 base<\/strong>.<\/td>\n<\/tr>\n<tr data-nodeid=\"2352\">\n<td data-nodeid=\"2353\"><strong data-nodeid=\"3123\">Utilisation de \u00abextend\u00bb pour les alternatives<\/strong><\/td>\n<td data-nodeid=\"2354\">Mod\u00e9lisation des flux alternatifs\u00a0<em data-nodeid=\"3129\">\u00e0 l&#8217;int\u00e9rieur<\/em>\u00a0un cas d&#8217;utilisation comme \u00abextend\u00bb au lieu d&#8217;utiliser des alternatives textuelles.<\/td>\n<td data-nodeid=\"2355\">Utilisez\u00a0<strong data-nodeid=\"3139\">flux alternatifs textuels<\/strong>\u00a0pour la plupart des variations. R\u00e9servez \u00ab\u00e9tendre\u00bb pour\u00a0<strong data-nodeid=\"3140\">extensions r\u00e9ellement optionnelles<\/strong>.<\/td>\n<\/tr>\n<tr data-nodeid=\"2356\">\n<td data-nodeid=\"2357\"><strong data-nodeid=\"3144\">Cr\u00e9ation de cha\u00eenes d&#8217;inclusion<\/strong><\/td>\n<td data-nodeid=\"2358\">A \u2192 B \u2192 C \u2192 D \u2192 E\u2026<\/td>\n<td data-nodeid=\"2359\">\u00c9vitez les cha\u00eenes profondes. Si vous avez besoin de plusieurs inclu, envisagez\u00a0<strong data-nodeid=\"3151\">le r\u00e9factoring en un seul cas d&#8217;utilisation r\u00e9utilisable<\/strong>.<\/td>\n<\/tr>\n<tr data-nodeid=\"2360\">\n<td data-nodeid=\"2361\"><strong data-nodeid=\"3155\">Points d&#8217;extension flous<\/strong><\/td>\n<td data-nodeid=\"2362\">Ajout de relations \u00ab\u00e9tendre\u00bb sans points d&#8217;insertion clairs et nomm\u00e9s.<\/td>\n<td data-nodeid=\"2363\">D\u00e9finissez\u00a0<strong data-nodeid=\"3166\">points d&#8217;extension explicites<\/strong>\u00a0(par exemple, \u00abapr\u00e8s confirmation du paiement\u00bb) dans le cas d&#8217;utilisation de base.<\/td>\n<\/tr>\n<tr data-nodeid=\"2364\">\n<td data-nodeid=\"2365\"><strong data-nodeid=\"3170\">Brouillage du diagramme<\/strong><\/td>\n<td data-nodeid=\"2366\">Trop de cas d&#8217;utilisation et de relations \u2192 bruit visuel.<\/td>\n<td data-nodeid=\"2367\">Gardez les diagrammes\u00a0<strong data-nodeid=\"3177\">petits, centr\u00e9s et ax\u00e9s sur l&#8217;acteur<\/strong>. Utilisez plusieurs diagrammes par sous-syst\u00e8me.<\/td>\n<\/tr>\n<tr data-nodeid=\"2368\">\n<td data-nodeid=\"2369\"><strong data-nodeid=\"3181\">Confusion des parties prenantes<\/strong><\/td>\n<td data-nodeid=\"2370\">Les parties prenantes non techniques trouvent les relations \u00abinclure\/\u00e9tendre\u00bb difficiles \u00e0 comprendre.<\/td>\n<td data-nodeid=\"2371\">Utilisez\u00a0<strong data-nodeid=\"3192\">sc\u00e9narios textuels<\/strong>\u00a0ou\u00a0<strong data-nodeid=\"3193\">cartes des histoires utilisateurs<\/strong>\u00a0pour plus de clart\u00e9.<\/td>\n<\/tr>\n<tr data-nodeid=\"2372\">\n<td data-nodeid=\"2373\"><strong data-nodeid=\"3197\">Mod\u00e9lisation au niveau du design<\/strong><\/td>\n<td data-nodeid=\"2374\">Mod\u00e9lisation de l&#8217;architecture interne (par exemple, \u00abappeler la base de donn\u00e9es\u00bb) au lieu des objectifs utilisateurs.<\/td>\n<td data-nodeid=\"2375\">Restez centr\u00e9s sur\u00a0<strong data-nodeid=\"3208\">valeur de l&#8217;acteur<\/strong>\u2014pas l&#8217;impl\u00e9mentation.<\/td>\n<\/tr>\n<tr data-nodeid=\"2376\">\n<td data-nodeid=\"2377\"><strong data-nodeid=\"3212\">D\u00e9bats sans fin<\/strong><\/td>\n<td data-nodeid=\"2378\">Des \u00e9quipes discutant de \u00ab c&#8217;est inclure ou \u00e9tendre ? \u00bb au lieu d&#8217;\u00e9crire des sc\u00e9narios.<\/td>\n<td data-nodeid=\"2379\">Utilisez\u00a0<strong data-nodeid=\"3227\">heuristiques pratiques<\/strong>\u00a0et\u00a0<strong data-nodeid=\"3228\">priorisez la clart\u00e9 \u00e0 la formalit\u00e9<\/strong>.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr data-nodeid=\"2380\"\/>\n<h2 data-nodeid=\"2381\">\u2705 Meilleures pratiques pour 2025\u20132026 : une approche moderne et agile<\/h2>\n<p data-nodeid=\"2382\">Le paysage de l&#8217;ing\u00e9nierie des besoins a \u00e9volu\u00e9.\u00a0<strong data-nodeid=\"3239\">Les \u00e9quipes agiles, lean et orient\u00e9es produit<\/strong>\u00a0s&#8217;\u00e9loignent de plus en plus des diagrammes UML lourds au profit de\u00a0<strong data-nodeid=\"3240\">techniques l\u00e9g\u00e8res et centr\u00e9es sur la valeur<\/strong>\u00a0techniques.<\/p>\n<h3 data-nodeid=\"2383\">\ud83c\udfaf Principe fondamental :\u00a0<strong data-nodeid=\"3245\">Concentrez-vous sur la valeur de l&#8217;acteur, pas sur la structure interne<\/strong><\/h3>\n<blockquote data-nodeid=\"2384\">\n<p data-nodeid=\"2385\">\u2757\u00a0<strong data-nodeid=\"3257\">Posez cette question avant d&#8217;ajouter tout \u00abinclure\u00bb ou \u00ab\u00e9tendre\u00bb<\/strong>:<br \/>\n<em data-nodeid=\"3258\">\u00ab Ce lien aide-t-il l&#8217;utilisateur \u00e0 comprendre l&#8217;objectif, ou ne fait-il que d\u00e9composer le syst\u00e8me ? \u00bb<\/em><\/p>\n<\/blockquote>\n<h3 data-nodeid=\"2386\">\u2705 Meilleures pratiques modernes recommand\u00e9es :<\/h3>\n<h4 data-nodeid=\"2387\">1.\u00a0<strong data-nodeid=\"3264\">Utilisez \u00abinclure\u00bb avec parcimonie \u2014 uniquement pour les comportements r\u00e9utilisables majeurs<\/strong><\/h4>\n<ul data-nodeid=\"2388\">\n<li data-nodeid=\"2389\">\n<p data-nodeid=\"2390\">Utilisez uniquement pour\u00a0<strong data-nodeid=\"3274\">pr\u00e9occupations transversales<\/strong>\u00a0qui apparaissent dans\u00a0<strong data-nodeid=\"3275\">plusieurs<\/strong>\u00a0cas d&#8217;utilisation.<\/p>\n<\/li>\n<li data-nodeid=\"2391\">\n<p data-nodeid=\"2392\">Exemples :<\/p>\n<ul data-nodeid=\"2393\">\n<li data-nodeid=\"2394\">\n<p data-nodeid=\"2395\"><code data-backticks=\"1\" data-nodeid=\"3277\">Authentifier l'utilisateur<\/code><\/p>\n<\/li>\n<li data-nodeid=\"2396\">\n<p data-nodeid=\"2397\"><code data-backticks=\"1\" data-nodeid=\"3278\">Envoyer une notification par courriel<\/code><\/p>\n<\/li>\n<li data-nodeid=\"2398\">\n<p data-nodeid=\"2399\"><code data-backticks=\"1\" data-nodeid=\"3279\">Enregistrer un \u00e9v\u00e9nement de s\u00e9curit\u00e9<\/code><\/p>\n<\/li>\n<li data-nodeid=\"2400\">\n<p data-nodeid=\"2401\"><code data-backticks=\"1\" data-nodeid=\"3280\">Appliquer les r\u00e8gles m\u00e9tier<\/code><\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<blockquote data-nodeid=\"2402\">\n<p data-nodeid=\"2403\">\u274c \u00c9viter :\u00a0<code data-backticks=\"1\" data-nodeid=\"3282\">Saisir le nom d'utilisateur<\/code>,\u00a0<code data-backticks=\"1\" data-nodeid=\"3284\">Cliquez sur Envoyer<\/code>,\u00a0<code data-backticks=\"1\" data-nodeid=\"3286\">Valider le format du courriel<\/code><\/p>\n<\/blockquote>\n<h4 data-nodeid=\"2404\">2.\u00a0<strong data-nodeid=\"3291\">Pr\u00e9f\u00e9rer les flux alternatifs textuels aux \u00abextend\u00bb<\/strong><\/h4>\n<ul data-nodeid=\"2405\">\n<li data-nodeid=\"2406\">\n<p data-nodeid=\"2407\">Au lieu de :<\/p>\n<pre class=\"lang-plaintext\" data-nodeid=\"2408\"><code data-language=\"plaintext\">\u00abextend\u00bb : S\u00e9lectionner le si\u00e8ge pr\u00e9f\u00e9r\u00e9 \u2192 R\u00e9server le vol\r\n<\/code><\/pre>\n<\/li>\n<li data-nodeid=\"2409\">\n<p data-nodeid=\"2410\">Utiliser :<\/p>\n<pre class=\"lang-plaintext\" data-nodeid=\"2411\"><code data-language=\"plaintext\">Cas d'utilisation : R\u00e9server un vol\r\n...\r\nFlux alternatif :\r\n  1. L'utilisateur s\u00e9lectionne l'option \u00ab Si\u00e8ge pr\u00e9f\u00e9r\u00e9 \u00bb.\r\n  2. Le syst\u00e8me affiche la carte des si\u00e8ges.\r\n  3. L'utilisateur s\u00e9lectionne un si\u00e8ge.\r\n  4. Le syst\u00e8me applique la pr\u00e9f\u00e9rence de si\u00e8ge.\r\n<\/code><\/pre>\n<\/li>\n<\/ul>\n<blockquote data-nodeid=\"2412\">\n<p data-nodeid=\"2413\">\u2705\u00a0<strong data-nodeid=\"3311\">Pourquoi ?<\/strong>\u00a0Les flux textuels sont\u00a0<strong data-nodeid=\"3312\">plus faciles \u00e0 lire<\/strong>,\u00a0<strong data-nodeid=\"3313\">plus flexibles<\/strong>, et\u00a0<strong data-nodeid=\"3314\">moins sujets \u00e0 une mauvaise utilisation<\/strong>.<\/p>\n<\/blockquote>\n<h4 data-nodeid=\"2414\">3.\u00a0<strong data-nodeid=\"3319\">Garder <a href=\"https:\/\/online.visual-paradigm.com\/diagrams\/features\/use-case-diagram-software\/\">Diagrammes de cas d&#8217;utilisation<\/a>Petits et centr\u00e9s<\/strong><\/h4>\n<ul data-nodeid=\"2415\">\n<li data-nodeid=\"2416\">\n<p data-nodeid=\"2417\">Un diagramme par\u00a0<strong data-nodeid=\"3329\">acteur<\/strong>\u00a0ou\u00a0<strong data-nodeid=\"3330\">sous-syst\u00e8me<\/strong>.<\/p>\n<\/li>\n<li data-nodeid=\"2418\">\n<p data-nodeid=\"2419\">Limitez \u00e0\u00a0<strong data-nodeid=\"3336\">5 \u00e0 10 cas d&#8217;utilisation<\/strong>\u00a0par diagramme.<\/p>\n<\/li>\n<li data-nodeid=\"2420\">\n<p data-nodeid=\"2421\">Utilisez\u00a0<strong data-nodeid=\"3346\">diagrammes de paquetage<\/strong>\u00a0ou\u00a0<strong data-nodeid=\"3347\">diagrammes de contexte<\/strong>\u00a0pour montrer la structure de haut niveau.<\/p>\n<\/li>\n<\/ul>\n<h4 data-nodeid=\"2422\">4.\u00a0<strong data-nodeid=\"3352\">Demandez\u00a0: \u00ab\u00a0Un plan de r\u00e9cit d\u2019utilisateur communiquerait-il mieux cela\u00a0?\u00a0\u00bb<\/strong><\/h4>\n<ul data-nodeid=\"2423\">\n<li data-nodeid=\"2424\">\n<p data-nodeid=\"2425\">Si vous utilisez 10+ relations \u00ab\u00a0inclure\u00a0\u00bb\/\u00ab\u00a0\u00e9tendre\u00a0\u00bb, envisagez de remplacer le diagramme par\u00a0:<\/p>\n<ul data-nodeid=\"2426\">\n<li data-nodeid=\"2427\">\n<p data-nodeid=\"2428\">Un\u00a0<strong data-nodeid=\"3358\">plan de r\u00e9cit d\u2019utilisateur<\/strong><\/p>\n<\/li>\n<li data-nodeid=\"2429\">\n<p data-nodeid=\"2430\">Un\u00a0<strong data-nodeid=\"3363\">tableau bas\u00e9 sur des sc\u00e9narios<\/strong><\/p>\n<\/li>\n<li data-nodeid=\"2431\">\n<p data-nodeid=\"2432\">Un\u00a0<strong data-nodeid=\"3369\">sch\u00e9ma simple<\/strong>\u00a0avec les chemins cl\u00e9s<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<blockquote data-nodeid=\"2433\">\n<p data-nodeid=\"2434\">\ud83d\udd04\u00a0<strong data-nodeid=\"3383\">Tendance moderne<\/strong>: De nombreuses \u00e9quipes agiles\u00a0<strong data-nodeid=\"3384\">\u00e9vitent compl\u00e8tement les diagrammes de cas d&#8217;utilisation<\/strong>\u00a0ou les utilisent\u00a0<strong data-nodeid=\"3385\">uniquement pour la d\u00e9couverte de haut niveau<\/strong>.<\/p>\n<\/blockquote>\n<h4 data-nodeid=\"2435\">5.\u00a0<strong data-nodeid=\"3390\">Utilisez \u00abextend\u00bb uniquement pour les variantes significatives<\/strong><\/h4>\n<ul data-nodeid=\"2436\">\n<li data-nodeid=\"2437\">\n<p data-nodeid=\"2438\">R\u00e9servez \u00abextend\u00bb pour<strong data-nodeid=\"3396\">facultatif, non essentiel<\/strong>fonctionnalit\u00e9s telles que :<\/p>\n<ul data-nodeid=\"2439\">\n<li data-nodeid=\"2440\">\n<p data-nodeid=\"2441\">Sont<strong data-nodeid=\"3401\">rarement utilis\u00e9es<\/strong><\/p>\n<\/li>\n<li data-nodeid=\"2442\">\n<p data-nodeid=\"2443\">Sont<strong data-nodeid=\"3406\">d\u00e9pendantes du contexte<\/strong><\/p>\n<\/li>\n<li data-nodeid=\"2444\">\n<p data-nodeid=\"2445\">Sont<strong data-nodeid=\"3412\">ind\u00e9pendantes<\/strong>du but principal<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<blockquote data-nodeid=\"2446\">\n<p data-nodeid=\"2447\">\u2705 Exemple :<br \/>\n<code data-backticks=\"1\" data-nodeid=\"3415\">Traiter le paiement<\/code>\u00a0(base)<br \/>\n<code data-backticks=\"1\" data-nodeid=\"3418\">Appliquer l'authentification 3D Secure<\/code>\u00a0(extend) \u2014 uniquement lorsque requis par la banque<\/p>\n<\/blockquote>\n<blockquote data-nodeid=\"2448\">\n<p data-nodeid=\"2449\">\u274c \u00c9vitez :<br \/>\n<code data-backticks=\"1\" data-nodeid=\"3422\">Saisir le num\u00e9ro de carte<\/code>\u00a0\u2192\u00a0<code data-backticks=\"1\" data-nodeid=\"3424\">Valider la carte<\/code>\u00a0\u2192\u00a0<code data-backticks=\"1\" data-nodeid=\"3426\">Traiter le paiement<\/code>\u00a0(tous doivent \u00eatre des \u00e9tapes du m\u00eame cas d&#8217;utilisation)<\/p>\n<\/blockquote>\n<hr data-nodeid=\"2450\"\/>\n<h2 data-nodeid=\"2451\">\ud83d\udcca R\u00e9sum\u00e9 : Les r\u00e8gles d&#8217;or de \u00abinclude\u00bb et \u00abextend\u00bb<\/h2>\n<table data-nodeid=\"2453\">\n<thead data-nodeid=\"2454\">\n<tr data-nodeid=\"2455\">\n<th data-nodeid=\"2457\">R\u00e8gle<\/th>\n<th data-nodeid=\"2458\">Conseils<\/th>\n<\/tr>\n<\/thead>\n<tbody data-nodeid=\"2461\">\n<tr data-nodeid=\"2462\">\n<td data-nodeid=\"2463\"><strong data-nodeid=\"3434\">1. \u00abinclude\u00bb = Obligatoire<\/strong><\/td>\n<td data-nodeid=\"2464\">Utilisez uniquement pour<strong data-nodeid=\"3440\">essentiel, r\u00e9utilisable<\/strong>\u00e9tapes qui apparaissent dans \u22652 cas d&#8217;utilisation.<\/td>\n<\/tr>\n<tr data-nodeid=\"2465\">\n<td data-nodeid=\"2466\"><strong data-nodeid=\"3444\">2. \u00abextend\u00bb = facultatif<\/strong><\/td>\n<td data-nodeid=\"2467\">Utilisez uniquement pour<strong data-nodeid=\"3450\">conditionnel, variant ou rare<\/strong>comportements.<\/td>\n<\/tr>\n<tr data-nodeid=\"2468\">\n<td data-nodeid=\"2469\"><strong data-nodeid=\"3454\">3. Le cas d&#8217;utilisation de base doit \u00eatre complet<\/strong><\/td>\n<td data-nodeid=\"2470\">\u00abextend\u00bb : la base fonctionne seule. \u00abinclude\u00bb : la base est incompl\u00e8te sans elle.<\/td>\n<\/tr>\n<tr data-nodeid=\"2471\">\n<td data-nodeid=\"2472\"><strong data-nodeid=\"3459\">4. Gardez-le simple<\/strong><\/td>\n<td data-nodeid=\"2473\">Si un cas d&#8217;utilisation comporte moins de 4 \u00e0 6 \u00e9tapes apr\u00e8s \u00abinclude\u00bb\/\u00abextend\u00bb, vous avez surexpliqu\u00e9.<\/td>\n<\/tr>\n<tr data-nodeid=\"2474\">\n<td data-nodeid=\"2475\"><strong data-nodeid=\"3466\">5. Priorisez la lisibilit\u00e9<\/strong><\/td>\n<td data-nodeid=\"2476\">Sc\u00e9narios textuels &gt; diagrammes complexes.<\/td>\n<\/tr>\n<tr data-nodeid=\"2477\">\n<td data-nodeid=\"2478\"><strong data-nodeid=\"3471\">6. \u00c9vitez les cha\u00eenes<\/strong><\/td>\n<td data-nodeid=\"2479\">Pas A \u2192 B \u2192 C \u2192 D. R\u00e9organisez en un seul cas d&#8217;utilisation r\u00e9utilisable.<\/td>\n<\/tr>\n<tr data-nodeid=\"2480\">\n<td data-nodeid=\"2481\"><strong data-nodeid=\"3476\">7. Conna\u00eetre son public<\/strong><\/td>\n<td data-nodeid=\"2482\">Les parties prenantes ne s&#8217;int\u00e9ressent pas aux fl\u00e8ches \u00abinclude\u00bb\u2014<strong data-nodeid=\"3482\">ils s&#8217;int\u00e9ressent \u00e0 la valeur<\/strong>.<\/td>\n<\/tr>\n<tr data-nodeid=\"2483\">\n<td data-nodeid=\"2484\"><strong data-nodeid=\"3486\">Posez-vous la question : \u00ab S&#8217;agit-il d&#8217;un objectif utilisateur ou d&#8217;une \u00e9tape interne ? \u00bb<\/strong><\/td>\n<td data-nodeid=\"2485\">Si ce n&#8217;est pas un objectif pour l&#8217;acteur, il ne devrait probablement pas figurer dans un cas d&#8217;utilisation.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<hr data-nodeid=\"2486\"\/>\n<h2 data-nodeid=\"2487\">\ud83c\udfaf Pens\u00e9e finale : Outils, pas pi\u00e8ges<\/h2>\n<p data-nodeid=\"2488\">\u00abinclude\u00bb et \u00abextend\u00bb sont<strong data-nodeid=\"3494\">des outils puissants<\/strong>\u2014pas des r\u00e8gles rigides. Ils ont \u00e9t\u00e9 con\u00e7us pour :<\/p>\n<ul data-nodeid=\"2489\">\n<li data-nodeid=\"2490\">\n<p data-nodeid=\"2491\"><strong data-nodeid=\"3498\">R\u00e9duire la duplication<\/strong><\/p>\n<\/li>\n<li data-nodeid=\"2492\">\n<p data-nodeid=\"2493\"><strong data-nodeid=\"3502\">G\u00e9rer la variabilit\u00e9<\/strong><\/p>\n<\/li>\n<li data-nodeid=\"2494\">\n<p data-nodeid=\"2495\"><strong data-nodeid=\"3506\">Am\u00e9liorer la maintenabilit\u00e9<\/strong><\/p>\n<\/li>\n<\/ul>\n<p data-nodeid=\"2496\">Mais comme<strong data-nodeid=\"3520\">la d\u00e9composition fonctionnelle dans les diagrammes en flux de donn\u00e9es<\/strong>, ils deviennent<strong data-nodeid=\"3521\">des armes dangereuses<\/strong>lorsqu&#8217;ils sont trop utilis\u00e9s. Le vrai danger n&#8217;est pas les relations elles-m\u00eames \u2014 c&#8217;est<strong data-nodeid=\"3522\">perdre de vue l&#8217;objectif de l&#8217;utilisateur<\/strong>.<\/p>\n<blockquote data-nodeid=\"2497\">\n<p data-nodeid=\"2498\">\ud83d\udd25\u00a0<strong data-nodeid=\"3536\">Souviens-toi<\/strong>:<br \/>\nUn cas d&#8217;utilisation n&#8217;est pas un processus technique.<br \/>\nC&#8217;est un <strong data-nodeid=\"3537\">histoire sur ce que l&#8217;utilisateur souhaite accomplir<\/strong>\u2014et comment le syst\u00e8me aide.<\/p>\n<\/blockquote>\n<p data-nodeid=\"2499\">En cas de doute, <strong data-nodeid=\"3543\">demandez-vous<\/strong>:<\/p>\n<blockquote data-nodeid=\"2500\">\n<p data-nodeid=\"2501\"><em data-nodeid=\"3554\">\u00ab Un utilisateur comprendrait-il cela sans conna\u00eetre le UML ? \u00bb<\/em><br \/>\nSinon, simplifiez.<br \/>\nSi oui, vous \u00eates sur la bonne voie.<\/p>\n<\/blockquote>\n<hr data-nodeid=\"2502\"\/>\n<h2 data-nodeid=\"2503\">\ud83d\udcda Lecture compl\u00e9mentaire et r\u00e9f\u00e9rences<\/h2>\n<ul data-nodeid=\"2504\">\n<li data-nodeid=\"2505\">\n<p data-nodeid=\"2506\"><strong data-nodeid=\"3565\">Sp\u00e9cification UML (OMG)<\/strong>:\u00a0<a data-nodeid=\"3564\" href=\"https:\/\/www.omg.org\/spec\/UML\">www.omg.org\/spec\/UML<\/a><\/p>\n<\/li>\n<li data-nodeid=\"2507\">\n<p data-nodeid=\"2508\"><strong data-nodeid=\"3579\">Martin Fowler \u2013 Mod\u00e9lisation des cas d&#8217;utilisation<\/strong>:\u00a0<em data-nodeid=\"3580\">Mod\u00e8les d&#8217;analyse<\/em>\u00a0&amp;\u00a0<em data-nodeid=\"3581\">UML Distill\u00e9<\/em><\/p>\n<\/li>\n<li data-nodeid=\"2509\">\n<p data-nodeid=\"2510\"><strong data-nodeid=\"3586\">Ivar Jacobson \u2013 L&#8217;avantage des objets<\/strong>: Travail fondamental sur les cas d&#8217;utilisation<\/p>\n<\/li>\n<li data-nodeid=\"2511\">\n<p data-nodeid=\"2512\"><strong data-nodeid=\"3591\">Mod\u00e9lisation agile (AM)<\/strong> par Scott W. Ambler<\/p>\n<\/li>\n<li data-nodeid=\"2513\">\n<p data-nodeid=\"2514\"><strong data-nodeid=\"3596\">Cartographie des user stories<\/strong> par Jeff Patton \u2013 Une alternative moderne aux diagrammes complexes<\/p>\n<\/li>\n<\/ul>\n<hr data-nodeid=\"2515\"\/>\n<h2 data-nodeid=\"2516\">\u2705 La r\u00e8gle de la phrase unique<\/h2>\n<blockquote data-nodeid=\"2517\">\n<p data-nodeid=\"2518\"><strong data-nodeid=\"3601\">Utilisez \u00abinclude\u00bb pour le r\u00e9emploi obligatoire, \u00abextend\u00bb pour la variation facultative, mais uniquement lorsque cela ajoute v\u00e9ritablement de la valeur. Sinon, gardez-le simple.<\/strong><\/p>\n<\/blockquote>\n<p data-nodeid=\"2519\">Parce que, au final,\u00a0<strong data-nodeid=\"3606\">l&#8217;objectif n&#8217;est pas de dessiner des diagrammes parfaits <a href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/overview-of-the-14-uml-diagram-types\/\">diagrammes UML<\/a>\u2014c&#8217;est de construire des syst\u00e8mes qui apportent une v\u00e9ritable valeur aux vrais utilisateurs.<\/strong><\/p>\n<hr data-nodeid=\"2520\"\/>\n<p class=\"\" data-nodeid=\"2521\">\ud83d\udccc\u00a0<strong data-nodeid=\"3630\">Note de l&#8217;auteur (2025\u20132026)<\/strong>:<br \/>\nAlors que les \u00e9quipes passent vers\u00a0<strong data-nodeid=\"3631\">orient\u00e9 produit<\/strong>,\u00a0<strong data-nodeid=\"3632\">orient\u00e9 valeur<\/strong>, et\u00a0<strong data-nodeid=\"3633\">collaboratif<\/strong>\u00a0d\u00e9veloppement, le r\u00f4le des diagrammes UML traditionnels \u00e9volue. \u00abinclude\u00bb et \u00abextend\u00bb restent utiles, mais uniquement lorsqu&#8217;ils sont utilis\u00e9s avec mod\u00e9ration, clart\u00e9 et objectif<strong data-nodeid=\"3634\">seulement lorsqu&#8217;ils sont utilis\u00e9s avec mod\u00e9ration, clart\u00e9 et objectif<\/strong>. Laissez-les servir l&#8217;utilisateur, pas le diagramme.<\/p>\n<ul>\n<li data-nodeid=\"3127\"><a data-nodeid=\"3161\" href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-use-case-diagram\/\"><strong data-nodeid=\"3162\">Qu&#8217;est-ce qu&#8217;un diagramme de cas d&#8217;utilisation ? \u2013 Un guide complet sur la mod\u00e9lisation UML<\/strong><\/a>: Ce guide fournit une explication approfondie des diagrammes de cas d&#8217;utilisation, couvrant leur objectif, leurs composants et les meilleures pratiques pour mod\u00e9liser les exigences logicielles.<\/li>\n<li data-nodeid=\"3129\"><a data-nodeid=\"3168\" href=\"https:\/\/online.visual-paradigm.com\/diagrams\/tutorials\/use-case-diagram-tutorial\/\"><strong data-nodeid=\"3169\">Tutoriel pas \u00e0 pas sur les diagrammes de cas d&#8217;utilisation \u2013 Du d\u00e9butant \u00e0 l&#8217;expert<\/strong><\/a>: Cette ressource compl\u00e8te guide les utilisateurs dans la cr\u00e9ation de diagrammes de cas d&#8217;utilisation efficaces, des concepts de base aux techniques avanc\u00e9es de mod\u00e9lisation.<\/li>\n<li data-nodeid=\"3131\"><a data-nodeid=\"3175\" href=\"https:\/\/www.visual-paradigm.com\/features\/use-case-description\/\"><strong data-nodeid=\"3176\">Visual Paradigm \u2013 Fonctionnalit\u00e9s de description de cas d&#8217;utilisation<\/strong><\/a>: Cet article explore les fonctionnalit\u00e9s sp\u00e9cifiques disponibles dans Visual Paradigm pour documenter les interactions utilisateur et le comportement du syst\u00e8me avec pr\u00e9cision.<\/li>\n<li data-nodeid=\"3133\"><a data-nodeid=\"3182\" href=\"https:\/\/www.visual-paradigm.com\/features\/ai-use-case-description-generator\/\"><strong data-nodeid=\"3183\">G\u00e9n\u00e9rateur de descriptions de cas d&#8217;utilisation par IA par Visual Paradigm<\/strong><\/a>: Cette page d\u00e9crit un outil aliment\u00e9 par l&#8217;IA qui g\u00e9n\u00e8re automatiquement des descriptions d\u00e9taill\u00e9es de cas d&#8217;utilisation \u00e0 partir des entr\u00e9es utilisateur, acc\u00e9l\u00e9rant consid\u00e9rablement le processus de documentation.<\/li>\n<li data-nodeid=\"3135\"><a data-nodeid=\"3189\" href=\"https:\/\/www.archimetric.com\/automating-use-case-development-with-visual-paradigms-ai-powered-use-case-description-generator\/\"><strong data-nodeid=\"3190\">Automatisation du d\u00e9veloppement de cas d&#8217;utilisation avec l&#8217;IA dans Visual Paradigm<\/strong><\/a>: Cet article explique comment le g\u00e9n\u00e9rateur pilot\u00e9 par l&#8217;IA r\u00e9duit l&#8217;effort manuel et am\u00e9liore la coh\u00e9rence tout au long du cycle de vie du d\u00e9veloppement logiciel.<\/li>\n<li data-nodeid=\"3137\"><a data-nodeid=\"3196\" href=\"https:\/\/guides.visual-paradigm.com\/use-case-description-generator-tutorial\/\"><strong data-nodeid=\"3197\">Tutoriel du g\u00e9n\u00e9rateur de descriptions de cas d&#8217;utilisation de Visual Paradigm<\/strong><\/a>: Un tutoriel pas \u00e0 pas qui montre comment produire automatiquement des documents de cas d&#8217;utilisation structur\u00e9s et d\u00e9taill\u00e9s directement \u00e0 partir de vos diagrammes.<\/li>\n<li data-nodeid=\"3139\"><a data-nodeid=\"3203\" href=\"https:\/\/www.visual-paradigm.com\/support\/documents\/vpuserguide\/94\/2575\/21179_documentingu.html\"><strong data-nodeid=\"3204\">Documentation des cas d&#8217;utilisation dans Visual Paradigm : Guide utilisateur<\/strong><\/a>: Ce guide officiel explique comment documenter efficacement les exigences en utilisant des mod\u00e8les \u00e9tablis et les meilleures pratiques dans l&#8217;environnement de mod\u00e9lisation.<\/li>\n<li data-nodeid=\"3141\"><a data-nodeid=\"3210\" href=\"https:\/\/www.visual-paradigm.com\/support\/documents\/vpuserguide\/94\/2575\/83684_produceuseca.html\"><strong data-nodeid=\"3211\">R\u00e9daction de descriptions de cas d&#8217;utilisation dans Visual Paradigm<\/strong><\/a>: Ce guide technique fournit des instructions sur l&#8217;utilisation des outils int\u00e9gr\u00e9s du logiciel pour cr\u00e9er des descriptions formelles des exigences syst\u00e8me.<\/li>\n<li data-nodeid=\"3143\"><a data-nodeid=\"3219\" href=\"https:\/\/guides.visual-paradigm.com\/demystifying-use-cases-scenarios-flow-of-events-and-templates\/\"><strong data-nodeid=\"3220\">D\u00e9voiler les cas d&#8217;utilisation, les sc\u00e9narios et le d\u00e9roulement des \u00e9v\u00e9nements<\/strong><\/a>: Cette ressource approfondie explique les relations critiques entre les cas d&#8217;utilisation, les sc\u00e9narios et le d\u00e9roulement structur\u00e9 des \u00e9v\u00e9nements n\u00e9cessaires \u00e0 une documentation pr\u00e9cise.<\/li>\n<li data-nodeid=\"3145\"><a data-nodeid=\"3226\" href=\"https:\/\/www.visual-paradigm.com\/tutorials\/writingeffectiveusecase.jsp\"><strong data-nodeid=\"3227\">Comment r\u00e9diger des cas d&#8217;utilisation efficaces ? \u2013 Visual Paradigm<\/strong><\/a>: Ce tutoriel met en \u00e9vidence que le but principal de la mod\u00e9lisation des cas d&#8217;utilisation est de cr\u00e9er une base solide pour le syst\u00e8me en identifiant clairement les besoins des utilisateurs.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Dans le monde des exigences logicielles et de la mod\u00e9lisation des syst\u00e8mes,\u00a0UML (Langage de mod\u00e9lisation unifi\u00e9) reste une pierre angulaire pour visualiser le comportement des syst\u00e8mes. Parmi ses fonctionnalit\u00e9s les&hellip;<\/p>\n","protected":false},"author":2,"featured_media":3016,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"","fifu_image_url":"https:\/\/www.go2posts.com\/wp-content\/uploads\/2026\/02\/img_698c52950b097.png","fifu_image_alt":"","footnotes":""},"categories":[74],"tags":[],"class_list":["post-3015","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uml"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Maitriser les relations de cas d&#039;utilisation UML : la puissance et le danger de \u00abinclude\u00bb et \u00abextend\u00bb - Go 2 Posts French | Breaking Digital News &amp; Software Trends<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.go2posts.com\/fr\/mastering-uml-use-case-relationships-the-power-and-peril-of-include-and-extend\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Maitriser les relations de cas d&#039;utilisation UML : la puissance et le danger de \u00abinclude\u00bb et \u00abextend\u00bb - Go 2 Posts French | Breaking Digital News &amp; Software Trends\" \/>\n<meta property=\"og:description\" content=\"Dans le monde des exigences logicielles et de la mod\u00e9lisation des syst\u00e8mes,\u00a0UML (Langage de mod\u00e9lisation unifi\u00e9) reste une pierre angulaire pour visualiser le comportement des syst\u00e8mes. Parmi ses fonctionnalit\u00e9s les&hellip;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.go2posts.com\/fr\/mastering-uml-use-case-relationships-the-power-and-peril-of-include-and-extend\/\" \/>\n<meta property=\"og:site_name\" content=\"Go 2 Posts French | Breaking Digital News &amp; Software Trends\" \/>\n<meta property=\"article:published_time\" content=\"2026-02-13T06:11:56+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.go2posts.com\/wp-content\/uploads\/2026\/02\/img_698c52950b097.png\" \/><meta property=\"og:image\" content=\"https:\/\/www.go2posts.com\/wp-content\/uploads\/2026\/02\/img_698c52950b097.png\" \/>\n\t<meta property=\"og:image:width\" content=\"629\" \/>\n\t<meta property=\"og:image:height\" content=\"583\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"curtis\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:image\" content=\"https:\/\/www.go2posts.com\/wp-content\/uploads\/2026\/02\/img_698c52950b097.png\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"curtis\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"8 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.go2posts.com\/fr\/mastering-uml-use-case-relationships-the-power-and-peril-of-include-and-extend\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.go2posts.com\/fr\/mastering-uml-use-case-relationships-the-power-and-peril-of-include-and-extend\/\"},\"author\":{\"name\":\"curtis\",\"@id\":\"https:\/\/www.go2posts.com\/fr\/#\/schema\/person\/7d2ba976d99a3712085fad7b38500b83\"},\"headline\":\"Maitriser les relations de cas d&#8217;utilisation UML : la puissance et le danger de \u00abinclude\u00bb et \u00abextend\u00bb\",\"datePublished\":\"2026-02-13T06:11:56+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.go2posts.com\/fr\/mastering-uml-use-case-relationships-the-power-and-peril-of-include-and-extend\/\"},\"wordCount\":2543,\"publisher\":{\"@id\":\"https:\/\/www.go2posts.com\/fr\/#organization\"},\"image\":{\"@id\":\"https:\/\/www.go2posts.com\/fr\/mastering-uml-use-case-relationships-the-power-and-peril-of-include-and-extend\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.go2posts.com\/fr\/wp-content\/uploads\/sites\/18\/2026\/02\/img_698c52950b097.png\",\"articleSection\":[\"UML\"],\"inLanguage\":\"fr-FR\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.go2posts.com\/fr\/mastering-uml-use-case-relationships-the-power-and-peril-of-include-and-extend\/\",\"url\":\"https:\/\/www.go2posts.com\/fr\/mastering-uml-use-case-relationships-the-power-and-peril-of-include-and-extend\/\",\"name\":\"Maitriser les relations de cas d'utilisation UML : la puissance et le danger de \u00abinclude\u00bb et \u00abextend\u00bb - Go 2 Posts French | Breaking Digital News &amp; Software Trends\",\"isPartOf\":{\"@id\":\"https:\/\/www.go2posts.com\/fr\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.go2posts.com\/fr\/mastering-uml-use-case-relationships-the-power-and-peril-of-include-and-extend\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.go2posts.com\/fr\/mastering-uml-use-case-relationships-the-power-and-peril-of-include-and-extend\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.go2posts.com\/fr\/wp-content\/uploads\/sites\/18\/2026\/02\/img_698c52950b097.png\",\"datePublished\":\"2026-02-13T06:11:56+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/www.go2posts.com\/fr\/mastering-uml-use-case-relationships-the-power-and-peril-of-include-and-extend\/#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.go2posts.com\/fr\/mastering-uml-use-case-relationships-the-power-and-peril-of-include-and-extend\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/www.go2posts.com\/fr\/mastering-uml-use-case-relationships-the-power-and-peril-of-include-and-extend\/#primaryimage\",\"url\":\"https:\/\/www.go2posts.com\/fr\/wp-content\/uploads\/sites\/18\/2026\/02\/img_698c52950b097.png\",\"contentUrl\":\"https:\/\/www.go2posts.com\/fr\/wp-content\/uploads\/sites\/18\/2026\/02\/img_698c52950b097.png\",\"width\":629,\"height\":583},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.go2posts.com\/fr\/mastering-uml-use-case-relationships-the-power-and-peril-of-include-and-extend\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/www.go2posts.com\/fr\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Maitriser les relations de cas d&#8217;utilisation UML : la puissance et le danger de \u00abinclude\u00bb et \u00abextend\u00bb\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.go2posts.com\/fr\/#website\",\"url\":\"https:\/\/www.go2posts.com\/fr\/\",\"name\":\"Go 2 Posts French | Breaking Digital News &amp; Software Trends\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\/\/www.go2posts.com\/fr\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.go2posts.com\/fr\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"fr-FR\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/www.go2posts.com\/fr\/#organization\",\"name\":\"Go 2 Posts French | Breaking Digital News &amp; Software Trends\",\"url\":\"https:\/\/www.go2posts.com\/fr\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/www.go2posts.com\/fr\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/www.go2posts.com\/fr\/wp-content\/uploads\/sites\/18\/2025\/01\/logo.png\",\"contentUrl\":\"https:\/\/www.go2posts.com\/fr\/wp-content\/uploads\/sites\/18\/2025\/01\/logo.png\",\"width\":341,\"height\":46,\"caption\":\"Go 2 Posts French | Breaking Digital News &amp; Software Trends\"},\"image\":{\"@id\":\"https:\/\/www.go2posts.com\/fr\/#\/schema\/logo\/image\/\"}},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.go2posts.com\/fr\/#\/schema\/person\/7d2ba976d99a3712085fad7b38500b83\",\"name\":\"curtis\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\/\/www.go2posts.com\/fr\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/secure.gravatar.com\/avatar\/6910084565fcc601ec03c6693bb8ea480c1e52ccaa0efb299eb038bb6a1edc87?s=96&d=mm&r=g\",\"contentUrl\":\"https:\/\/secure.gravatar.com\/avatar\/6910084565fcc601ec03c6693bb8ea480c1e52ccaa0efb299eb038bb6a1edc87?s=96&d=mm&r=g\",\"caption\":\"curtis\"},\"url\":\"https:\/\/www.go2posts.com\/fr\/author\/curtis\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Maitriser les relations de cas d'utilisation UML : la puissance et le danger de \u00abinclude\u00bb et \u00abextend\u00bb - Go 2 Posts French | Breaking Digital News &amp; Software Trends","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.go2posts.com\/fr\/mastering-uml-use-case-relationships-the-power-and-peril-of-include-and-extend\/","og_locale":"fr_FR","og_type":"article","og_title":"Maitriser les relations de cas d'utilisation UML : la puissance et le danger de \u00abinclude\u00bb et \u00abextend\u00bb - Go 2 Posts French | Breaking Digital News &amp; Software Trends","og_description":"Dans le monde des exigences logicielles et de la mod\u00e9lisation des syst\u00e8mes,\u00a0UML (Langage de mod\u00e9lisation unifi\u00e9) reste une pierre angulaire pour visualiser le comportement des syst\u00e8mes. Parmi ses fonctionnalit\u00e9s les&hellip;","og_url":"https:\/\/www.go2posts.com\/fr\/mastering-uml-use-case-relationships-the-power-and-peril-of-include-and-extend\/","og_site_name":"Go 2 Posts French | Breaking Digital News &amp; Software Trends","article_published_time":"2026-02-13T06:11:56+00:00","og_image":[{"url":"https:\/\/www.go2posts.com\/wp-content\/uploads\/2026\/02\/img_698c52950b097.png","type":"","width":"","height":""},{"width":629,"height":583,"url":"https:\/\/www.go2posts.com\/wp-content\/uploads\/2026\/02\/img_698c52950b097.png","type":"image\/png"}],"author":"curtis","twitter_card":"summary_large_image","twitter_image":"https:\/\/www.go2posts.com\/wp-content\/uploads\/2026\/02\/img_698c52950b097.png","twitter_misc":{"\u00c9crit par":"curtis","Dur\u00e9e de lecture estim\u00e9e":"8 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.go2posts.com\/fr\/mastering-uml-use-case-relationships-the-power-and-peril-of-include-and-extend\/#article","isPartOf":{"@id":"https:\/\/www.go2posts.com\/fr\/mastering-uml-use-case-relationships-the-power-and-peril-of-include-and-extend\/"},"author":{"name":"curtis","@id":"https:\/\/www.go2posts.com\/fr\/#\/schema\/person\/7d2ba976d99a3712085fad7b38500b83"},"headline":"Maitriser les relations de cas d&#8217;utilisation UML : la puissance et le danger de \u00abinclude\u00bb et \u00abextend\u00bb","datePublished":"2026-02-13T06:11:56+00:00","mainEntityOfPage":{"@id":"https:\/\/www.go2posts.com\/fr\/mastering-uml-use-case-relationships-the-power-and-peril-of-include-and-extend\/"},"wordCount":2543,"publisher":{"@id":"https:\/\/www.go2posts.com\/fr\/#organization"},"image":{"@id":"https:\/\/www.go2posts.com\/fr\/mastering-uml-use-case-relationships-the-power-and-peril-of-include-and-extend\/#primaryimage"},"thumbnailUrl":"https:\/\/www.go2posts.com\/fr\/wp-content\/uploads\/sites\/18\/2026\/02\/img_698c52950b097.png","articleSection":["UML"],"inLanguage":"fr-FR"},{"@type":"WebPage","@id":"https:\/\/www.go2posts.com\/fr\/mastering-uml-use-case-relationships-the-power-and-peril-of-include-and-extend\/","url":"https:\/\/www.go2posts.com\/fr\/mastering-uml-use-case-relationships-the-power-and-peril-of-include-and-extend\/","name":"Maitriser les relations de cas d'utilisation UML : la puissance et le danger de \u00abinclude\u00bb et \u00abextend\u00bb - Go 2 Posts French | Breaking Digital News &amp; Software Trends","isPartOf":{"@id":"https:\/\/www.go2posts.com\/fr\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.go2posts.com\/fr\/mastering-uml-use-case-relationships-the-power-and-peril-of-include-and-extend\/#primaryimage"},"image":{"@id":"https:\/\/www.go2posts.com\/fr\/mastering-uml-use-case-relationships-the-power-and-peril-of-include-and-extend\/#primaryimage"},"thumbnailUrl":"https:\/\/www.go2posts.com\/fr\/wp-content\/uploads\/sites\/18\/2026\/02\/img_698c52950b097.png","datePublished":"2026-02-13T06:11:56+00:00","breadcrumb":{"@id":"https:\/\/www.go2posts.com\/fr\/mastering-uml-use-case-relationships-the-power-and-peril-of-include-and-extend\/#breadcrumb"},"inLanguage":"fr-FR","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.go2posts.com\/fr\/mastering-uml-use-case-relationships-the-power-and-peril-of-include-and-extend\/"]}]},{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/www.go2posts.com\/fr\/mastering-uml-use-case-relationships-the-power-and-peril-of-include-and-extend\/#primaryimage","url":"https:\/\/www.go2posts.com\/fr\/wp-content\/uploads\/sites\/18\/2026\/02\/img_698c52950b097.png","contentUrl":"https:\/\/www.go2posts.com\/fr\/wp-content\/uploads\/sites\/18\/2026\/02\/img_698c52950b097.png","width":629,"height":583},{"@type":"BreadcrumbList","@id":"https:\/\/www.go2posts.com\/fr\/mastering-uml-use-case-relationships-the-power-and-peril-of-include-and-extend\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.go2posts.com\/fr\/"},{"@type":"ListItem","position":2,"name":"Maitriser les relations de cas d&#8217;utilisation UML : la puissance et le danger de \u00abinclude\u00bb et \u00abextend\u00bb"}]},{"@type":"WebSite","@id":"https:\/\/www.go2posts.com\/fr\/#website","url":"https:\/\/www.go2posts.com\/fr\/","name":"Go 2 Posts French | Breaking Digital News &amp; Software Trends","description":"","publisher":{"@id":"https:\/\/www.go2posts.com\/fr\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.go2posts.com\/fr\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"fr-FR"},{"@type":"Organization","@id":"https:\/\/www.go2posts.com\/fr\/#organization","name":"Go 2 Posts French | Breaking Digital News &amp; Software Trends","url":"https:\/\/www.go2posts.com\/fr\/","logo":{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/www.go2posts.com\/fr\/#\/schema\/logo\/image\/","url":"https:\/\/www.go2posts.com\/fr\/wp-content\/uploads\/sites\/18\/2025\/01\/logo.png","contentUrl":"https:\/\/www.go2posts.com\/fr\/wp-content\/uploads\/sites\/18\/2025\/01\/logo.png","width":341,"height":46,"caption":"Go 2 Posts French | Breaking Digital News &amp; Software Trends"},"image":{"@id":"https:\/\/www.go2posts.com\/fr\/#\/schema\/logo\/image\/"}},{"@type":"Person","@id":"https:\/\/www.go2posts.com\/fr\/#\/schema\/person\/7d2ba976d99a3712085fad7b38500b83","name":"curtis","image":{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/www.go2posts.com\/fr\/#\/schema\/person\/image\/","url":"https:\/\/secure.gravatar.com\/avatar\/6910084565fcc601ec03c6693bb8ea480c1e52ccaa0efb299eb038bb6a1edc87?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/6910084565fcc601ec03c6693bb8ea480c1e52ccaa0efb299eb038bb6a1edc87?s=96&d=mm&r=g","caption":"curtis"},"url":"https:\/\/www.go2posts.com\/fr\/author\/curtis\/"}]}},"_links":{"self":[{"href":"https:\/\/www.go2posts.com\/fr\/wp-json\/wp\/v2\/posts\/3015","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.go2posts.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.go2posts.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.go2posts.com\/fr\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.go2posts.com\/fr\/wp-json\/wp\/v2\/comments?post=3015"}],"version-history":[{"count":0,"href":"https:\/\/www.go2posts.com\/fr\/wp-json\/wp\/v2\/posts\/3015\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.go2posts.com\/fr\/wp-json\/wp\/v2\/media\/3016"}],"wp:attachment":[{"href":"https:\/\/www.go2posts.com\/fr\/wp-json\/wp\/v2\/media?parent=3015"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.go2posts.com\/fr\/wp-json\/wp\/v2\/categories?post=3015"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.go2posts.com\/fr\/wp-json\/wp\/v2\/tags?post=3015"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}