ITM 305 Lecture Notes - Canter And Gallop
Document Summary
Data dictionary and context diagram, list of natural statements (requirement set), problem statement. They use natural language (rich, nuanced, not constrained), english. Challenging to communicate requirements precisely and unambiguously Use case diagram, activity diagram, use case description. How the system shall behave to satisfy the user requirements. Shows the boundaries of the system and the category of users expected to. Specifies of the pieces of system functional behaviour that would satisfy the itemized of user requirement. Each major/coherent functional behaviour piece is called a use case. It is the process of moving what the user wants from the system to how the system shall behave to satisfy it . There is no reference to the internal structure of the system. It doesn"t care about how the system should be made. A scenarios is an complete path if execution through the entire use case. A scenario is a instance of the use case.