LoanItem
- DueDate:date- ReturnDate:date
+ getLoaniteminfo()+ updataLoanItemDate()+ getLoaninfo()
Loan
- loanID:string- DataofLoan:string- Status:string
+updataStatus()
RuturnbookController
BookCopy
- Title:string- Author:string- Publisher:string- catalogNumber:string- copyNumber:string- edition:string- pubYear:string- ISBN:string
+ getBookinfo()
