1. 图书借阅顺序图：
: ：LibrariantheLendWindotheBorrower:Borrowerw:Lendwindow1:LoanBook()2:IdentifiBorrower(borrowerID)3:OKtheReservation:ReservationBookTitle:TitleBookItem:ItemBookLoan:Loan4:CheckReservation(borrowID)5:OK6:Find_on_Titlt(title)7:OK8:Find_on_Item(itemID)9:OK10:CreateLoanRecord(borrowerID,itemID)11:OK12:SuccessLoan(borrowerID,itemID)
2. 系统包图：
User InterfaceError ProcessBook Management Information SystemDatabase
3. 顺序图：
: Admin:Registrartheform:Form View : NewInstancethecourse:Course : thecontrolobject:ControlObjNewInstanceect : NewInstance : db:Database4. 图书管理信息系统：3:Verify()4:Return()5:QueryCourse()6:IsAdd()8:ShowOK()7:AddCourse()9:Destroy()
BookManagementLibrarianBorrower LoanManagement UserManagementSysAdministartor
5. 图书管理信息系统：
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