Use Case _User Login

Some ProjectUse Case Specification: User LoginVersion <1.0>Revision HistoryDateVersionDescriptionAuthor6/18/20091.0Preliminary use case specificationGreg BhatiaTable of Contents1.Use Case Name41.1Brief Description42.Flow of Events42.1Basic Flow42.2Alternative Flows42.2.1User is not registered43.Special Requirements44.Pre-Conditions45.Post-Conditions45.1The user is logged in successfully46.Extension Points4Use Case Specification: User Login Use Case Name Brief DescriptionThis use case begins when a user tries to login into the systemFlow of EventsBasic Flow 1. User is presented with the login screen2. User enters user name3. User enters password4. User clicks the SUBMIT button5. Upon successful login, the user is redirected to a Welcome screenAlternative FlowsUser is not registeredA4.1.1 The user is presented with an error message explaining that a registration is required.A4.1.2 The user is redirected to the registration screen2.2.2 Invalid username or passwordA4.2.1 The user is presented with an error message explaining that an invalid username or password has been enteredA4.2.2 The user is redirected to the login screenSpecial RequirementsNonePre-ConditionsThe system must be online and available for usePost-ConditionsThe user is logged in successfullyExtension PointsNone