Question: Consider a local library management system. In this system, there are lenders who can lend books to the library, and borrowers who borrow books from
Consider a local library management system. In this system, there are lenders who can lend
books to the library, and borrowers who borrow books from the system. The same person can function as both a lender and a borrower of books. However, individuals in both roles will have separate identifiers a lenderID and a borrowerID This distinction is made as not everyone is required to both lend and borrow books. Each book in the system needs to have exactly one lender. Additionally, every borrower must have borrowed at least one book. Note that different physical copies of the same book will have distinct IDs.
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