图书馆管理系统（运用oracle数据库）

bookBrowse: Id number(3),primary key studentName varchar2(40),not null bookName varchar2(40),not null borrowDate Date, returnDate Date, com varchar2(40), is_returned char(2),not null,否 books: id number(3),primary key bookName varchar2(40),not null press varchar2(40),not null author varchar2(40),not null address varchar2(40), pressDate Date, price number(5,2), com varchar2(40), books_count number(2), borrowed_count number(2), userTable: id number(3),primary key userName varchar2(20),not null password varchar2(20),not null power varchar(20),not null id_browse_sequence id_user_sequence id_sequence