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Prof. Ítalo Quirino Brilhante
 O objetivo do diagrama de atividades é
mostrar o fluxo de atividades em um único
processo;
 O diagrama mostra como uma atividade
depende uma da outra.
 Um diagrama de atividades possui regiões
denominadas swimlanes. Estas regiões estão
associadas a um objeto do modelo;
 Desta forma, dentro de cada região,
encontram-se as atividades relativas ao
objeto da região.
 As atividades são conectadas através de arcos
(transições), que mostram as dependências
entre elas;
 Exemplo: Retirando dinheiro de um caixa
eletrônico.
 Imagem:
 http://www.dsc.ufcg.edu.br/~jacques/cursos
/map/html/uml/diagramas/atividades/diag_
atividades.htm
 Branch: Divisão do fluxo da atividade em 2 ou
mais caminhos, onde apenas um dos
caminhos é utilizado em um cenário;
 Fork: Divisão do fluxo da atividade em 2 ou
mais caminhos, onde todos são executados
(em paralelo).
 Join: Ponto em que os fluxos se unem (após
um Fork);
 Merge: Ponto em que os fluxos se unem
(após um Branch).
 A grande diferença entre um diagrama de
colaboração e um diagrama de sequência
consiste no fato de que o tempo não é mais
representado por linhas verticais, mas sim
através de uma numeração, que pode ser de
duas formas.
 Simples: (1, 2, 3...);
 Composta: (1.1, 1.2, 1.2.1...).
 Um objeto é representado como um
retângulo, contendo no seu interior um
rótulo, que informa o nome do objeto e o
nome da classe, separados por dois pontos.
 Imagem:
 http://www.dsc.ufcg.edu.br/~jacques/cursos
/map/html/uml/diagramas/interacao/colabo
racao.htm

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Aula 6 diagramas de atividade e colaboração1 (1)