本设计将软件工程与数据库相融合。

信息需求:图书信息,包括图书编号、图书名称、所属类别等；读者信息，包括读者编码、姓名、性别、专业等；借还书信息，包括图书当前状态、被借还次数、借阅时间等。

系统功能基本要求:可以自定义图书类别，读者类别，方便添加图书、添加读者。

数据管理提供：图书管理，读者管理等功能。

数据查询和统计：借阅记录查询、逾期借阅记录查询、图书借阅统计、读者借阅统计。

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This design will be integration of software engineering and database.

Information requirements: book information, including book number and book name, category, etc　Reader s information, including reader s code, name, sex, professional, etc.　Borrow return book information, including books and the current state and are often borrowed, borrowed time, etc.

Basic requirements: system function can be custom categories of books, readers category, is convenient to add books, added the reader.

Data management, books management, reader management, and other functions.

Data query and statistics: borrowing record query, overdue borrowing record query, library statistics, readers lending statistics.