How To Use UML Statechart Substates

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UML Statecharts can be very effective modeling tools for describing systems and software requirements. They provide a clear framework for identifying business rules. The same business rules often apply to multiple states – defining a commonality for those states. There is an element called a substate in UML statecharts that can be used to make it more obvious that a particular business rule applies to multiple states.

UML Statecharts and Documenting Business Rules

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In yesterday’s article we compared use cases and UML statecharts as tools for discovering business rules. James Taylor asked a question about how we would document those rules, and then followed up my comment response with an article about business rules and RUP. In this article we move the conversation slightly forward – recognizing that we’re slowly entering the ocean of business process management.

Use Case vs. UML Statechart – Business Rules

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What is the better requirements management model for capturing business rules? The use case, or the UML statechart? In this article, we explore how customer orders are submitted and processed, and contrast how use cases and statecharts expose and document business requirements and business rules.