Question

1. The use case description for the Reserve Room use case is given below. Identify interface and entity classes for the Reserve Room use case.

Use case: Reserve Room use case

Summary: Desk clerk checks whether a room is available and reserves a room if it is available.

Actors: Desk Clerk

Precondition: System is idle.

Main Description:

1. A desk clerk inputs information for checking room availability.
2. The system checks if a room is available.
3. If a room is available, the desk clerk inputs reservation information to the system.
4. The system reserves a room and generates the confirmation number.
5. System displays the confirmation number to the desk clerk.

Alternative Description:

If a room is not available, system generates a message “Room is full”.

Postcondition: A room has been reserved.

Answer 1

Here the interface would be the room which will be implemented by the entity class desk clerk to check for the availability of the room and the room interface will provide with the result whether the room is avaialble or not if available , the clerk will be able to put the data into the system and user would be allotted with a confirmation number by the system.