1.实现对二进制数据库的检索，查找，修改，增加，删除等操作； 2.实现数据库的加密，支持密码校验登陆有效防止防止数据泄漏。 3.程序启动时自动校验数据库完整性及其数据合法性并且自动屏蔽非法数据及提示用户删除损坏的数据库。 4.可以按归并排序方法对书目进行排序； 5.内置前台销售操作功能，可以实现图书销售的功能，并且根据销售情况实时修改数据库； 6.内置强大的异常处理机制，可以应付绝大部分异常情况。 7.程序标题栏实时显示程序状态。

对初学者很有帮助的-1. The realization of the binary database search, find, modify, add, delete and other operations　2. The realization of the database encryption, support for password check to prevent the landing effectively prevent data leakage. 3. Procedure automatically check data integrity and legitimacy of the database and automatic shield illegal data and prompts the user to delete the damaged database. 4. May merge sort method to sort the bibliography　5. Built-front sales operation, can achieve the function of book sales and, in accordance with amendments to the sale of real-time database　6. Built a powerful exception handling mechanism to cope with the vast some anomalies. 7. Program title bar in real-time status display program. Useful for beginners