Use Cases and Use Case Diagrams

1
Use Cases and Use Case Diagrams

• Purpose To identify and partition system
  functionality
• Identify actors(roles) and use cases
• Describe the behavior of the system

2
Use CasesIdentified the followingPrimary
actorsPre-ConditionPrimary ScenarioSecondary
ScenarioPost Condition
3
Allocate Budget (Use Case 1)Primary Actors
HeadquartersPre-ConditionThe time of
allocation is the just before the beginning of
each quarter.
4
Primary ScenarioHeadquarters allocates certain
amount of money to each department.Secondary
Scenario(s)N/APost ConditionEvery
department gets its allotted budget money for the
current quarter expenses.