(c) The following relational schema form part of a database held for library borrowing system. BookCopy is referring to the physical copies of each book in the library. Book (BookID, BookTitle, BookAuthor, publishDate, publisherName, ISBN) BookCopy (copyNo, ISBN, Price) Borrower (BorrowID, BorrowName, BorrowPhone, BorrowEmail) Loan (BorrowlD, dateTimeOut, dateDue, dateReturned, copyNo) Identify ONE (1) weak entity based on the above relational schema. Justify your answer. (i) (ii) Explain how the entity integrity and referential integrity rules are applied to these relations.

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Transaction Processing

Transaction processing is a computational style generally performed by server computers, which supports interactive applications (apps). Transaction processing is also known as information processing, which divides the work into indivisible and individual operations called transactions. The transaction is a set of tasks; a single task is considered as the minimum processing unit that cannot be divided again.