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What is an Activity Diagram and what is its purpose?

Posted by Chris Adams

Article Rating // 46380 Views // 1 Additional Answers & Comments

Categories: Business Analysis, Systems Analysis, Unified Modeling Language (UML)


An Activity Diagram is a behavioral diagram that shows the flow or sequence of activities through a system.  The terms activity diagram and process flow are often used interchangeably.  However, the term activity diagram is typically more restrictive as it refers to one of thirteen standard Unified Model Language (UML) diagrams.  Activity Diagrams are one of the most commonly used diagrams since its notation and origin are based on the widely known flowchart notation.



Penguin19 posted on Wednesday, January 6, 2010 6:48 PM
Activity diagram is mainly used to show parallel processing. It contains a Fork and a Join and a Branch and a Merge. The Fork represents parallel processing and the Join signifies the end of the parallel processing. Branch is used for a guard or a decision point in other words. It is like an if/else. Every Branch corresponds to a Merge which signifies linear processing from that point on.
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Do your homework prior to the business analysis interview!

Having an idea of the type of questions you might be asked during a business analyst interview will not only give you confidence but it will also help you to formulate your thoughts and to be better prepared to answer the interview questions you might get during the interview for a business analyst position.  Of course, just memorizing a list of business analyst interview questions will not make you a great business analyst but it might just help you get that next job.



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