+--------+
| Book |
+--------+
| BookID |
| Title |
| Author |
| ISBN |
+--------+
|
|
|
+-------------------+----------------------+
| |
| |
+--------+ +--------+
| Copy | | Member |
+--------+ +--------+
| CopyID | | MemberID |
| Status | | Name |
| BookID | | Address |
+--------+ | Phone |
| +--------+
| |
| |
+-------------------+ | +--------------+ +-------------------+
| | | | | | |
| Borrow Transaction | | | Return | | Reserve |
| | | | Transaction | | Transaction |
+-------------------+ | | Transaction | | |
| BorrowTransactionID| | | ReturnTransID| | ReserveTransaction|
| CopyID |<----+ | CopyID |<-----| MemberID |
| MemberID | | MemberID | | CopyID |
| DateBorrowed | | DateReturned| | DateReserved |
| DueDate | +--------------+ | DateNeeded |
| DateReturned | +-------------------+
+-------------------+