Draw and explain a Use-ease diagram for an e-commerce system.
|NU Year||Set: 2.(d) Marks: 6 Year: 2017|
Primary actor: Admin, User
Admin: User: wants to access the system as a valid user that is as an administrator, as an admin, as a user.
Organizations: wants to avoid those people who are not valid in the system.
Also, want to ensure the security.
Precondition: Users are registered in the system.
Post Conditions: Successful login for all registered users.
Main success scenario:
A user starts to login in.
User enters username and password.
System checks whether username and password type is valid or not.
If valid then starts a user session and give access permission.
If the username is invalid then system shows an error message that “Invalid user, Please re-enter correct username and password”.