There is no specific format for use case. A use depends upon the situation and condition for a particular application. Use is hard to understand by the user and the developer.it just gives an idea about each and every step for an application.The three main features of use case are.
1.Actor.
2.System.
3.Goal.
Actor is a person by which interact with the system for a particular goal. Actor is a stakeholder means an actor can be a human or hardware or software, company or organization. An actor is a person who can make decision
A system is a collection of elements or components that are organized for a command purpose. In case of use case system interact with actor to achieve final goal.
Goal is the final out that an actor wants to have.
basic structure of use case is:
1.Use case name
2.Primary function.
3.Actor.
4.Pre-conditions.
5.Flow of events.
6.Special requirements.
7.Post conditions.
basic structure of use case is:
1.Use case name
2.Primary function.
3.Actor.
4.Pre-conditions.
5.Flow of events.
6.Special requirements.
7.Post conditions.
