{"id":371,"date":"2022-01-25T11:00:32","date_gmt":"2022-01-25T11:00:32","guid":{"rendered":"https:\/\/www.cybermedian.com\/pt\/?p=371"},"modified":"2022-03-30T11:39:06","modified_gmt":"2022-03-30T03:39:06","slug":"use-case-learn-by-examples","status":"publish","type":"post","link":"https:\/\/www.cybermedian.com\/pt\/use-case-learn-by-examples\/","title":{"rendered":"Caso de uso &#8211; aprender por exemplos"},"content":{"rendered":"<section class=\"section section--body section--last\">\n<div class=\"section-content\">\n<div class=\"section-inner sectionLayout--insetColumn\">\n<section class=\"section section--body section--first\">\n<div class=\"section-content\">\n<div class=\"section-inner sectionLayout--insetColumn\">\n<p id=\"d415\" class=\"graf graf--p graf-after--h3\">Um caso de uso descreve como um usu\u00e1rio usa um sistema para atingir um objetivo espec\u00edfico.\u00a0Um diagrama de caso de uso consiste no sistema, nos casos de uso relacionados e nos atores e os relaciona entre si para visualizar: o que est\u00e1 sendo descrito?\u00a0(\u00a0<strong class=\"markup--strong markup--p-strong\">sistema<\/strong>\u00a0), quem est\u00e1 usando o sistema?\u00a0(\u00a0<strong class=\"markup--strong markup--p-strong\">atores<\/strong>\u00a0) e o que os atores querem alcan\u00e7ar?\u00a0(\u00a0<strong class=\"markup--strong markup--p-strong\">casos de uso<\/strong>\u00a0), assim, os casos de uso ajudam a garantir que o sistema correto seja desenvolvido, capturando os requisitos do ponto de vista do usu\u00e1rio.<\/p>\n<p id=\"6496\" class=\"graf graf--p graf-after--p\">Um diagrama de caso de uso geralmente \u00e9 simples.\u00a0N\u00e3o mostra o detalhe dos casos de uso:<\/p>\n<ul class=\"postList\">\n<li id=\"e679\" class=\"graf graf--li graf-after--p\">Ele apenas resume alguns dos relacionamentos entre casos de uso, atores e sistemas.<\/li>\n<li id=\"79fd\" class=\"graf graf--li graf-after--li\">Ele n\u00e3o mostra a ordem em que as etapas s\u00e3o executadas para atingir os objetivos de cada caso de uso.<\/li>\n<\/ul>\n<p id=\"2666\" class=\"graf graf--p graf-after--li\">Como dito, um diagrama de caso de uso deve ser simples e conter apenas algumas formas.\u00a0Se o seu cont\u00e9m mais de 20 casos de uso, voc\u00ea provavelmente est\u00e1 usando incorretamente o diagrama de casos de uso.<\/p>\n<p id=\"748a\" class=\"graf graf--p graf-after--p\">A figura abaixo mostra a hierarquia do diagrama UML e o posicionamento do Diagrama de Caso de Uso UML.\u00a0Como voc\u00ea pode ver, os diagramas de caso de uso pertencem \u00e0 fam\u00edlia dos diagramas comportamentais.<\/p>\n<figure id=\"4678\" class=\"graf graf--figure graf-after--p\"><img decoding=\"async\" class=\"graf-image\" src=\"https:\/\/www.cybermedian.com\/pt\/wp-content\/uploads\/sites\/11\/2022\/02\/0M0GGjOUMjM-P8DJM.png\" data-image-id=\"0*M0GGjOUMjM-P8DJM.png\" data-width=\"832\" data-height=\"501\" data-is-featured=\"true\" \/><\/figure>\n<h3 id=\"a2db\" class=\"graf graf--h3 graf-after--figure\"><span id=\"Use_Case_Diagram_at_a_Glance\">Resumo do Diagrama de Caso de Uso<\/span><\/h3>\n<p id=\"cdc3\" class=\"graf graf--p graf-after--h3\">Uma forma padr\u00e3o de diagrama de caso de uso \u00e9 definida na Unified Modeling Language, conforme mostrado no exemplo de diagrama de caso de uso abaixo:<\/p>\n<figure id=\"ce26\" class=\"graf graf--figure graf-after--p\"><img decoding=\"async\" class=\"graf-image\" src=\"https:\/\/www.cybermedian.com\/pt\/wp-content\/uploads\/sites\/11\/2022\/02\/0N32b47ItZgZwoe_a.png\" data-image-id=\"0*N32b47ItZgZwoe_a.png\" data-width=\"616\" data-height=\"360\" \/><\/figure>\n<p id=\"38c0\" class=\"graf graf--p graf-after--figure\">Descri\u00e7\u00e3o da Nota\u00e7\u00e3oRepresenta\u00e7\u00e3o Visual<\/p>\n<p id=\"21c4\" class=\"graf graf--p graf-after--p\">Ator<\/p>\n<ul class=\"postList\">\n<li id=\"e825\" class=\"graf graf--li graf-after--p\">Algu\u00e9m interage com o caso de uso (fun\u00e7\u00e3o do sistema).<\/li>\n<li id=\"0b51\" class=\"graf graf--li graf-after--li\">Nomeado por substantivo.<\/li>\n<li id=\"6df7\" class=\"graf graf--li graf-after--li\">Ator desempenha um papel no neg\u00f3cio<\/li>\n<li id=\"51d8\" class=\"graf graf--li graf-after--li\">Semelhante ao conceito de usu\u00e1rio, mas um usu\u00e1rio pode desempenhar pap\u00e9is diferentes<\/li>\n<li id=\"37fc\" class=\"graf graf--li graf-after--li\">Por exemplo:<\/li>\n<li id=\"fdf5\" class=\"graf graf--li graf-after--li\">Um prof.\u00a0pode ser instrutor e tamb\u00e9m pesquisador<\/li>\n<li id=\"a3f3\" class=\"graf graf--li graf-after--li\">desempenha 2 pap\u00e9is com dois sistemas<\/li>\n<li id=\"7bce\" class=\"graf graf--li graf-after--li\">O ator aciona o(s) caso(s) de uso.<\/li>\n<li id=\"6b9f\" class=\"graf graf--li graf-after--li\">O ator tem responsabilidade em rela\u00e7\u00e3o ao sistema (entradas) e o ator tem expectativas em rela\u00e7\u00e3o ao sistema (sa\u00eddas).<\/li>\n<\/ul>\n<figure id=\"35cb\" class=\"graf graf--figure graf-after--li\"><img decoding=\"async\" class=\"graf-image\" src=\"https:\/\/www.cybermedian.com\/pt\/wp-content\/uploads\/sites\/11\/2022\/02\/0ovEoJ1c4ITIbs3mq.png\" data-image-id=\"0*ovEoJ1c4ITIbs3mq.png\" data-width=\"31\" data-height=\"73\" \/><\/figure>\n<p id=\"4646\" class=\"graf graf--p graf-after--figure\">Caso de uso<\/p>\n<ul class=\"postList\">\n<li id=\"afbf\" class=\"graf graf--li graf-after--p\">Fun\u00e7\u00e3o do sistema (processo \u2014 automatizado ou manual)<\/li>\n<li id=\"8606\" class=\"graf graf--li graf-after--li\">Nomeado por verbo + Substantivo (ou Frase Substantiva).<\/li>\n<li id=\"123c\" class=\"graf graf--li graf-after--li\">ou seja, fazer algo<\/li>\n<li id=\"6d1b\" class=\"graf graf--li graf-after--li\">Cada Ator deve estar vinculado a um caso de uso, enquanto alguns casos de uso podem n\u00e3o estar vinculados a atores.<\/li>\n<\/ul>\n<figure id=\"d7af\" class=\"graf graf--figure graf-after--li\"><img decoding=\"async\" class=\"graf-image\" src=\"https:\/\/www.cybermedian.com\/pt\/wp-content\/uploads\/sites\/11\/2022\/02\/0l-Hszw3jCkG_H1td.png\" data-image-id=\"0*l-Hszw3jCkG_H1td.png\" data-width=\"81\" data-height=\"41\" \/><\/figure>\n<p id=\"a30d\" class=\"graf graf--p graf-after--figure\">Link de comunica\u00e7\u00e3o<\/p>\n<ul class=\"postList\">\n<li id=\"9542\" class=\"graf graf--li graf-after--p\">A participa\u00e7\u00e3o de um ator em um caso de uso \u00e9 mostrada conectando um ator a um caso de uso por um link s\u00f3lido.<\/li>\n<li id=\"2a53\" class=\"graf graf--li graf-after--li\">Os atores podem ser conectados aos casos de uso por associa\u00e7\u00f5es, indicando que o ator e o caso de uso se comunicam por meio de mensagens.<\/li>\n<\/ul>\n<figure id=\"72ba\" class=\"graf graf--figure graf-after--li\"><img decoding=\"async\" class=\"graf-image\" src=\"https:\/\/www.cybermedian.com\/pt\/wp-content\/uploads\/sites\/11\/2022\/02\/0_1PX9yPem3sBvnRp.png\" data-image-id=\"0*_1PX9yPem3sBvnRp.png\" data-width=\"130\" data-height=\"1\" \/><\/figure>\n<p id=\"c59e\" class=\"graf graf--p graf-after--figure\">Limite do sistema<\/p>\n<ul class=\"postList\">\n<li id=\"4516\" class=\"graf graf--li graf-after--p\">O limite do sistema \u00e9 potencialmente todo o sistema conforme definido no documento de requisitos.<\/li>\n<li id=\"a3e7\" class=\"graf graf--li graf-after--li\">Para sistemas grandes e complexos, cada m\u00f3dulo pode ser o limite do sistema.<\/li>\n<li id=\"709f\" class=\"graf graf--li graf-after--li\">Por exemplo, para um sistema ERP para uma organiza\u00e7\u00e3o, cada um dos m\u00f3dulos, como pessoal, folha de pagamento, contabilidade, etc.<\/li>\n<li id=\"0168\" class=\"graf graf--li graf-after--li\">pode formar um limite do sistema para casos de uso espec\u00edficos para cada uma dessas fun\u00e7\u00f5es de neg\u00f3cios.<\/li>\n<li id=\"e4cf\" class=\"graf graf--li graf-after--li\">Todo o sistema pode abranger todos esses m\u00f3dulos representando o limite geral do sistema<\/li>\n<\/ul>\n<figure id=\"76f4\" class=\"graf graf--figure graf-after--li graf--trailing\"><img decoding=\"async\" class=\"graf-image\" src=\"https:\/\/www.cybermedian.com\/pt\/wp-content\/uploads\/sites\/11\/2022\/02\/0PUdb7FHaXX3UgVuF.png\" data-image-id=\"0*PUdb7FHaXX3UgVuF.png\" data-width=\"160\" data-height=\"225\" \/><\/figure>\n<\/div>\n<\/div>\n<\/section>\n<section class=\"section section--body section--last\">\n<div class=\"section-divider\">\n<hr class=\"section-divider\" \/>\n<\/div>\n<div class=\"section-content\">\n<div class=\"section-inner sectionLayout--insetColumn\">\n<h3 id=\"38aa\" class=\"graf graf--h3 graf--leading\"><span id=\"Structuring_Use_Case_Diagram_with_Relationships\">Estruturando o diagrama de casos de uso com relacionamentos<\/span><\/h3>\n<p id=\"f5c3\" class=\"graf graf--p graf-after--h3\">Os casos de uso compartilham diferentes tipos de relacionamentos.\u00a0Definir o relacionamento entre dois casos de uso \u00e9 a decis\u00e3o dos analistas de software do diagrama de casos de uso.\u00a0Um relacionamento entre dois casos de uso \u00e9 basicamente modelar a depend\u00eancia entre os dois casos de uso.\u00a0A reutiliza\u00e7\u00e3o de um caso de uso existente usando diferentes tipos de relacionamentos reduz o esfor\u00e7o geral necess\u00e1rio no desenvolvimento de um sistema.\u00a0Os relacionamentos de casos de uso s\u00e3o listados a seguir:<\/p>\n<p id=\"2310\" class=\"graf graf--p graf-after--p\">Relacionamento de Caso de Uso \u2014 Representa\u00e7\u00e3o Visual<\/p>\n<p id=\"1285\" class=\"graf graf--p graf-after--p\"><strong class=\"markup--strong markup--p-strong\">Estende<\/strong><\/p>\n<ul class=\"postList\">\n<li id=\"cef9\" class=\"graf graf--li graf-after--p\">Indica que um caso de uso de \u201cSenha Inv\u00e1lida\u201d pode incluir (sujeito a especificado na extens\u00e3o) o comportamento especificado pelo caso de uso base \u201cConta de Login\u201d.<\/li>\n<li id=\"ddc2\" class=\"graf graf--li graf-after--li\">Represente com uma seta direcionada com uma linha pontilhada.\u00a0A ponta da seta aponta para o caso de uso base e o caso de uso filho \u00e9 conectado na base da seta.<\/li>\n<li id=\"c547\" class=\"graf graf--li graf-after--li\">O estere\u00f3tipo \u201c&lt;&lt;extends&gt;&gt;\u201d identifica como um relacionamento de extens\u00e3o<\/li>\n<\/ul>\n<figure id=\"da78\" class=\"graf graf--figure graf-after--li\"><img decoding=\"async\" class=\"graf-image\" src=\"https:\/\/www.cybermedian.com\/pt\/wp-content\/uploads\/sites\/11\/2022\/02\/0NDoHVpY3m5dtqmTH.png\" data-image-id=\"0*NDoHVpY3m5dtqmTH.png\" data-width=\"443\" data-height=\"60\" \/><\/figure>\n<p id=\"6519\" class=\"graf graf--p graf-after--figure\"><strong class=\"markup--strong markup--p-strong\">Incluir<\/strong><\/p>\n<ul class=\"postList\">\n<li id=\"b77e\" class=\"graf graf--li graf-after--p\">Quando um caso de uso \u00e9 descrito como usando a funcionalidade de outra funcionalidade de outro caso de uso, esse relacionamento entre os casos de uso \u00e9 nomeado como um relacionamento de inclus\u00e3o ou uso.<\/li>\n<li id=\"af89\" class=\"graf graf--li graf-after--li\">Um caso de uso inclui a funcionalidade descrita em outro caso de uso como parte de seu fluxo de processo de neg\u00f3cios.<\/li>\n<li id=\"0fef\" class=\"graf graf--li graf-after--li\">Um relacionamento de uso do caso de uso base para o caso de uso filho indica que uma inst\u00e2ncia do caso de uso base incluir\u00e1 o comportamento conforme especificado no caso de uso filho.<\/li>\n<li id=\"2948\" class=\"graf graf--li graf-after--li\">Uma rela\u00e7\u00e3o de inclus\u00e3o \u00e9 representada com uma seta direcionada com uma linha pontilhada.\u00a0A ponta da seta aponta para o caso de uso filho e o caso de uso pai conectado na base da seta.<\/li>\n<li id=\"ef94\" class=\"graf graf--li graf-after--li\">O estere\u00f3tipo \u201c&lt;&lt;include&gt;&gt;\u201d identifica o relacionamento como um relacionamento de inclus\u00e3o.<\/li>\n<\/ul>\n<figure id=\"6c0e\" class=\"graf graf--figure graf-after--li\"><img decoding=\"async\" class=\"graf-image\" src=\"https:\/\/www.cybermedian.com\/pt\/wp-content\/uploads\/sites\/11\/2022\/02\/07oeSkdepmKL40JLg.png\" data-image-id=\"0*7oeSkdepmKL40JLg.png\" data-width=\"328\" data-height=\"41\" \/><\/figure>\n<p id=\"5244\" class=\"graf graf--p graf-after--figure\"><strong class=\"markup--strong markup--p-strong\">Generaliza\u00e7\u00e3o<\/strong><\/p>\n<ul class=\"postList\">\n<li id=\"a751\" class=\"graf graf--li graf-after--p\">Um relacionamento de generaliza\u00e7\u00e3o \u00e9 um relacionamento pai-filho entre casos de uso.<\/li>\n<li id=\"7adf\" class=\"graf graf--li graf-after--li\">O caso de uso filho no relacionamento de generaliza\u00e7\u00e3o tem o significado do processo de neg\u00f3cios subjacente, mas \u00e9 um aprimoramento do caso de uso pai.<\/li>\n<li id=\"399f\" class=\"graf graf--li graf-after--li\">A generaliza\u00e7\u00e3o \u00e9 mostrada como uma seta direcionada com uma ponta de seta triangular.<\/li>\n<li id=\"019e\" class=\"graf graf--li graf-after--li\">O caso de uso filho \u00e9 conectado na base da seta.\u00a0A ponta da seta est\u00e1 conectada ao caso de uso pai.<\/li>\n<\/ul>\n<h3 id=\"ba35\" class=\"graf graf--h3 graf-after--li\"><span id=\"Learn_By_Examples_Passenger_Service\">Aprenda por exemplos &#8211; Servi\u00e7o de passageiros<\/span><\/h3>\n<p id=\"2519\" class=\"graf graf--p graf-after--h3\">Aqui est\u00e1 um exemplo de diagrama de caso de uso para servi\u00e7o de passageiros, vamos dar uma olhada.\u00a0No modelo de caso de uso existem 4 atores: representante de check-in, alf\u00e2ndega do aeroporto de destino, transporte de passageiros e bagagens.\u00a0Eles interagem com o sistema para atingir v\u00e1rios objetivos de neg\u00f3cios, conforme modelado por casos de uso check-in, check-in automatizado, check-in expresso, embarque e solicita\u00e7\u00e3o de lista de passageiros.<\/p>\n<p id=\"1ffd\" class=\"graf graf--p graf-after--p\">Use este modelo de diagrama de caso de uso para criar seu pr\u00f3prio diagrama.<\/p>\n<p id=\"5384\" class=\"graf graf--p graf-after--p\">Basta\u00a0<a class=\"markup--anchor markup--p-anchor\" href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:proj=0&amp;type=UseCaseDiagram&amp;gallery=\/repository\/92142a93-2b66-495e-8c97-6fd871672ee6.xml&amp;name=Passenger%20Service\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:proj=0&amp;type=UseCaseDiagram&amp;gallery=\/repository\/92142a93-2b66-495e-8c97-6fd871672ee6.xml&amp;name=Passenger%20Service\">\u00a0clicar\u00a0 em\u00a0<strong class=\"markup--strong markup--p-strong\">Usar este modelo<\/strong><\/a>\u00a0\u00a0para editar ou\u00a0<a class=\"markup--anchor markup--p-anchor\" href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagramlist:proj=0&amp;new=UseCaseDiagram\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagramlist:proj=0&amp;new=UseCaseDiagram\">\u00a0clicar em\u00a0\u00a0<strong class=\"markup--strong markup--p-strong\">Criar em branco<\/strong><\/a>\u00a0\u00a0para desenhar do zero.<\/p>\n<figure id=\"e4fe\" class=\"graf graf--figure graf-after--p\"><img decoding=\"async\" class=\"graf-image\" src=\"https:\/\/www.cybermedian.com\/pt\/wp-content\/uploads\/sites\/11\/2022\/02\/0lws26DubukhKoxi.png\" data-image-id=\"0*lws26DubukhKoxi-.png\" data-width=\"643\" data-height=\"393\" \/><\/figure>\n<h4 id=\"8bb6\" class=\"graf graf--h4 graf-after--figure\"><span id=\"Learn_by_Examples_Broadcasting_System_Use_Case_Package\">Aprenda por exemplos \u2014 Sistema de transmiss\u00e3o (Pacote de casos de uso)<\/span><\/h4>\n<p id=\"bd5b\" class=\"graf graf--p graf-after--h4\">Este \u00e9 um exemplo de diagrama de caso de uso para um sistema de transmiss\u00e3o online.\u00a0Usu\u00e1rios como membro geral e administrador s\u00e3o representados como atores, enquanto os objetivos de neg\u00f3cios do sistema, por exemplo, assistir a programas arquivados e ao vivo, participar de discuss\u00f5es de programas, fazer upload de programas de TV, s\u00e3o representados como casos de uso (ou seja, as formas ovais).\u00a0Este diagrama de caso de uso usa o limite do sistema e as formas de pacote na organiza\u00e7\u00e3o dos casos de uso.\u00a0Isso n\u00e3o \u00e9 obrigat\u00f3rio, mas isso torna todo o diagrama de caso de uso bem organizado.\u00a0Al\u00e9m disso, o uso da generaliza\u00e7\u00e3o na vincula\u00e7\u00e3o de Membro Geral\/Premium com Membro modela o fato de que o comportamento definido para Membro \u00e9 compartilhado entre Membro Geral e Premium.<\/p>\n<p id=\"2a5f\" class=\"graf graf--p graf-after--p\">Use este modelo de diagrama de caso de uso para criar seu pr\u00f3prio diagrama.<\/p>\n<p id=\"9b74\" class=\"graf graf--p graf-after--p\">Basta\u00a0\u00a0<a class=\"markup--anchor markup--p-anchor\" href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:proj=0&amp;type=UseCaseDiagram&amp;gallery=\/repository\/8b3fb61d-abbb-4d2c-8d3b-47e643316f1d.xml&amp;name=Broadcasting%20System\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:proj=0&amp;type=UseCaseDiagram&amp;gallery=\/repository\/8b3fb61d-abbb-4d2c-8d3b-47e643316f1d.xml&amp;name=Broadcasting%20System\">clicar\u00a0 em\u00a0<strong class=\"markup--strong markup--p-strong\">Usar este modelo<\/strong>\u00a0\u00a0para editar<\/a>\u00a0ou\u00a0\u00a0<a class=\"markup--anchor markup--p-anchor\" href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagramlist:proj=0&amp;new=UseCaseDiagram\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagramlist:proj=0&amp;new=UseCaseDiagram\">clicar em\u00a0\u00a0<strong class=\"markup--strong markup--p-strong\">Criar em branco<\/strong><\/a>\u00a0\u00a0para desenhar do zero.<\/p>\n<figure id=\"7869\" class=\"graf graf--figure graf-after--p\"><img decoding=\"async\" class=\"graf-image\" src=\"https:\/\/www.cybermedian.com\/pt\/wp-content\/uploads\/sites\/11\/2022\/02\/0guOv9uGmeduZE7jC.png\" data-image-id=\"0*guOv9uGmeduZE7jC.png\" data-width=\"665\" data-height=\"537\" \/><\/figure>\n<h4 id=\"af5f\" class=\"graf graf--h4 graf-after--figure\"><span id=\"Learn_by_Examples_Structuring_Use_Cases_with_Include_and_Extend\">Aprenda por exemplos \u2014 estruturando casos de uso com incluir e estender<\/span><\/h4>\n<p id=\"8ccc\" class=\"graf graf--p graf-after--h4\">Este exemplo de diagrama de caso de uso descreve um modelo de v\u00e1rios casos de uso de neg\u00f3cios.\u00a0O modelo de caso de uso representa as intera\u00e7\u00f5es entre um restaurante (o sistema de neg\u00f3cios) e seus principais stakeholders (atores de neg\u00f3cios e trabalhadores de neg\u00f3cios).\u00a0Ap\u00f3s a identifica\u00e7\u00e3o dos casos de uso base, voc\u00ea pode estruturar esses casos de uso com &lt;&gt; e &lt;&gt; casos de uso para maior clareza.<\/p>\n<p id=\"bfa9\" class=\"graf graf--p graf-after--p\">Use este modelo de diagrama de caso de uso para criar seu pr\u00f3prio diagrama.<\/p>\n<p id=\"ec50\" class=\"graf graf--p graf-after--p\">Basta\u00a0\u00a0<a class=\"markup--anchor markup--p-anchor\" href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:proj=0&amp;type=UseCaseDiagram&amp;gallery=\/repository\/4814c887-a726-47bb-8d07-df369cc93777.xml&amp;name=Include%20and%20Extend%20Use%20Cases\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagram:proj=0&amp;type=UseCaseDiagram&amp;gallery=\/repository\/4814c887-a726-47bb-8d07-df369cc93777.xml&amp;name=Include%20and%20Extend%20Use%20Cases\">clicar\u00a0 em\u00a0<strong class=\"markup--strong markup--p-strong\">Usar este modelo<\/strong>\u00a0\u00a0para editar<\/a>\u00a0ou\u00a0\u00a0<a class=\"markup--anchor markup--p-anchor\" href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagramlist:proj=0&amp;new=UseCaseDiagram\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/online.visual-paradigm.com\/diagrams.jsp#diagramlist:proj=0&amp;new=UseCaseDiagram\">clicar em\u00a0\u00a0<strong class=\"markup--strong markup--p-strong\">Criar em branco<\/strong><\/a>\u00a0\u00a0para desenhar do zero.<\/p>\n<figure id=\"f634\" class=\"graf graf--figure graf-after--p\"><img decoding=\"async\" class=\"graf-image\" src=\"https:\/\/www.cybermedian.com\/pt\/wp-content\/uploads\/sites\/11\/2022\/02\/0Bp1z89qEd_iU9AMS.png\" data-image-id=\"0*Bp1z89qEd_iU9AMS.png\" data-width=\"594\" data-height=\"505\" \/><\/figure>\n<h4 id=\"176b\" class=\"graf graf--h4 graf-after--figure\"><span id=\"Other_UML_Articles\">Outros artigos UML<\/span><\/h4>\n<p id=\"0761\" class=\"graf graf--p graf-after--h4\">Linguagem de modelagem unificada (UML)<\/p>\n<ul class=\"postList\">\n<li id=\"6312\" class=\"graf graf--li graf-after--p\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-uml\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-uml\/\">O que \u00e9 UML?<\/a><\/li>\n<li id=\"b443\" class=\"graf graf--li graf-after--li\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/why-uml-modeling\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/why-uml-modeling\/\">Por que modelagem UML?<\/a><\/li>\n<li id=\"d0ec\" class=\"graf graf--li graf-after--li\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/overview-of-the-14-uml-diagram-types\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/overview-of-the-14-uml-diagram-types\/\">Vis\u00e3o geral dos 14 tipos de diagrama UML<\/a><\/li>\n<li id=\"1e5d\" class=\"graf graf--li graf-after--li\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-class-diagram\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-class-diagram\/\">O que \u00e9 Diagrama de Classes?<\/a><\/li>\n<li id=\"6970\" class=\"graf graf--li graf-after--li\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-component-diagram\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-component-diagram\/\">O que \u00e9 diagrama de componentes?<\/a><\/li>\n<li id=\"840a\" class=\"graf graf--li graf-after--li\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-deployment-diagram\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-deployment-diagram\/\">O que \u00e9 Diagrama de Implanta\u00e7\u00e3o?<\/a><\/li>\n<li id=\"47ee\" class=\"graf graf--li graf-after--li\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-object-diagram\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-object-diagram\/\">O que \u00e9 Diagrama de Objetos?<\/a><\/li>\n<li id=\"7789\" class=\"graf graf--li graf-after--li\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-package-diagram\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-package-diagram\/\">O que \u00e9 Diagrama de Pacotes?<\/a><\/li>\n<li id=\"db9c\" class=\"graf graf--li graf-after--li\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-composite-structure-diagram\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-composite-structure-diagram\/\">O que \u00e9 diagrama de estrutura composta?<\/a><\/li>\n<li id=\"b22a\" class=\"graf graf--li graf-after--li\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-profile-diagram\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-profile-diagram\/\">O que \u00e9 Diagrama de Perfil?<\/a><\/li>\n<li id=\"e030\" class=\"graf graf--li graf-after--li\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-use-case-diagram\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-use-case-diagram\/\">O que \u00e9 o Diagrama de Caso de Uso?<\/a><\/li>\n<li id=\"2709\" class=\"graf graf--li graf-after--li\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-activity-diagram\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-activity-diagram\/\">O que \u00e9 Diagrama de Atividades?<\/a><\/li>\n<li id=\"7a30\" class=\"graf graf--li graf-after--li\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-state-machine-diagram\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-state-machine-diagram\/\">O que \u00e9 diagrama de m\u00e1quina de estado?<\/a><\/li>\n<li id=\"136f\" class=\"graf graf--li graf-after--li\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-sequence-diagram\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-sequence-diagram\/\">O que \u00e9 Diagrama de Sequ\u00eancia?<\/a><\/li>\n<li id=\"2c9c\" class=\"graf graf--li graf-after--li\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-communication-diagram\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-communication-diagram\/\">O que \u00e9 Diagrama de Comunica\u00e7\u00e3o?<\/a><\/li>\n<li id=\"8e6c\" class=\"graf graf--li graf-after--li\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-interaction-overview-diagram\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-interaction-overview-diagram\/\">O que \u00e9 o Diagrama de Vis\u00e3o Geral da Intera\u00e7\u00e3o?<\/a><\/li>\n<li id=\"0ca8\" class=\"graf graf--li graf-after--li\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-timing-diagram\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-timing-diagram\/\">O que \u00e9 diagrama de tempo<\/a><\/li>\n<li id=\"e35a\" class=\"graf graf--li graf-after--li\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-uml-collaboration-diagram\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/what-is-uml-collaboration-diagram\/\">O que \u00e9 diagrama de colabora\u00e7\u00e3o UML?<\/a><\/li>\n<li id=\"0b45\" class=\"graf graf--li graf-after--li\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/uml-aggregation-vs-composition\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/uml-aggregation-vs-composition\/\">Associa\u00e7\u00e3o UML vs Agrega\u00e7\u00e3o vs Composi\u00e7\u00e3o<\/a><\/li>\n<li id=\"211a\" class=\"graf graf--li graf-after--li\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/uml-class-diagram-tutorial\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/uml-class-diagram-tutorial\/\">Tutorial de diagrama de classe UML<\/a><\/li>\n<li id=\"e4f1\" class=\"graf graf--li graf-after--li graf--trailing\"><a class=\"markup--anchor markup--li-anchor\" href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/state-machine-diagram-vs-activity-diagram\/\" target=\"_blank\" rel=\"noopener\" data-href=\"https:\/\/www.visual-paradigm.com\/guide\/uml-unified-modeling-language\/state-machine-diagram-vs-activity-diagram\/\">Diagrama de m\u00e1quina de estado versus diagrama de atividade<\/a><\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/section>\n<\/div>\n<\/div>\n<\/section>\n","protected":false},"excerpt":{"rendered":"<p>Um caso de uso descreve como um usu\u00e1rio utiliza um sistema para atingir um objetivo espec\u00edfico. Um diagrama de caso de uso consiste em um sistema, casos de uso relacionados e atores, e os relaciona entre si para visualizar: o que est\u00e1 sendo descrito? (o sistema), quem est\u00e1 usando o sistema? (o ator) e o que o ator quer alcan\u00e7ar? (caso de uso), para que os casos de uso ajudem a garantir que o sistema correto seja desenvolvido capturando os requisitos da perspectiva do usu\u00e1rio.<\/p>\n","protected":false},"author":1,"featured_media":2728,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"","footnotes":""},"categories":[3],"tags":[52,63,62,53],"class_list":["post-371","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-unified-modeling-language","tag-cn-done","tag-es-done","tag-ja-done","tag-tw-done"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Caso de uso - aprender por exemplos - Cibermediano<\/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.cybermedian.com\/pt\/use-case-learn-by-examples\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Caso de uso - aprender por exemplos - Cibermediano\" \/>\n<meta property=\"og:description\" content=\"Um caso de uso descreve como um usu\u00e1rio utiliza um sistema para atingir um objetivo espec\u00edfico. Um diagrama de caso de uso consiste em um sistema, casos de uso relacionados e atores, e os relaciona entre si para visualizar: o que est\u00e1 sendo descrito? (o sistema), quem est\u00e1 usando o sistema? (o ator) e o que o ator quer alcan\u00e7ar? 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