Use Cases Preparedby:SoniaAgarwal

Course:Comp354January2018

Use Case Modelling

• Usecasemodellinghelpsustounderstandwhatoursystemis• Usecasemodellingconsistoftwoparts:• Usecases• Usecasediagram

Use case diagram

• Usecasediagramconsistofthreeimportantparts:•  Systemboundary:whichtellsusthescopeoftheapplicaDon• Usecases:usecasetalksaboutthefuncDonalityofthesystemfromanindividualperspecDves• Actors:ActorsareindividualrolesthatpeopleplayorindividualswhousethisapplicaDon.

Use Case Diagram

Use Case Template

Defini7on of Use Case

• UseCaseisadescripDonofthepossiblesequencesofinteracDons,betweenthesystemunderdiscussionanditsexternalactors,relatedtoaparDculargoal.

• OR

•  EachUsecaseisSequenceofac+onsasystemperformsthatyieldsanobservableresultsofvaluetoapar+cularactor

Use Case Model

Main success Scenario

Extensions

Por>olio Management

Execu7on of Use Case

Alterna7ve flows

Business Rules

Thankyou