Usecase Model ( .doc)

Usecase realization :
When UML diagrams of a Usecase are created then it is called Usecase  realization.

FAQ
  1. What is Usecase.?
  2. What is the extension of Usecase file?
  3. What are actors ?
  4. How many type of Actors are there ?
  5. What is difference between Basic Flow and Alternate Flow?
  6. Where do you keep your Usecases?
  7. Who creates Usecases?
  8. What is Usecase Model?
  9. What is Usecase Board?