Question

you are asked to do a detailed design using class diagram, modeling interactions and behaviour for a part of a library system. This part can be described as a use case: checkout an library item. In this use case, a librarian use the system to check out an item for a legitimate borrower. The system need to check the borrower’s record first and then update the library data, the borrower’s record etc. Note that the Example 4.12 of the textbook just provides requirements of the use case. But now you are asked to do the design of the software, which means you need to provide all the details for implementation. On the other hand, do not include anything not related to this use c

Question: Draw a detailed sequence diagram for this use case.

Answer 1

Given,

1. Checkout an library Item

2. Librarian use the system to check out an item for a legitimate borrower.

3. System needs to check the borrower s record.

4. Update the library data.

Use case diagram-

1. Librarian- responsible for checking out the book for legitimate user.

2. Borrower- Checkout a library item.

3. System- check borrowers record and update library data.