图书管理系统类图

reader

reader_id:Integerreader_name:Stringsex:Byteage:Integerclass:Stringcollege:Stringtel_phone:Integeraddress:Stringmemo:ariartborrowed:booksreservation:reservation

reader_id()getreaders()addborrowed()deleteborrowed()getborrowed()addreservation()deletereservation()getreservation()querybynamequerybyreader_id()setname()setaddress()setsex()setage()setclass()settel_phone(0getname()getsex()getage()getclass()write()read()

books

book_id:Integertitle:Stringauthor:Stringtype:Stringitems:itemresrvations:reservationprice:Double

book()querybybook_id()querybytitle()querybyauthor()gettitle()getauthor()getbook_id()gettype()getprice()setbook_id()settype()setauthor()setprice(0additem()deleteitem()addreservation()deletereservation()write()read()

reservation

title:booksreservater:readers

reservation()gettitle()getborrower()write()read()

borrow

item:itemborrower:readers

borrow()getborrower()gettitle()gettiterr()write()read()

item

item_id:Integertitle:Objectborrowed:borrow

item()gettitle()getid()setborrowed()getborrowed()isborrowed()gettiterr()write()read()

persistent store

object_id:Integer

persistent()getobject_id()store()add()update()write()read()