说明：  Microsoft Jet数据库引擎是一种数据管理组件，许多数据库工具都是基于它实现的，例如MFC DAO类、Microsoft Access，Microsoft Visual Basic以及一些Microsoft桌面数据库驱动程序。VC++在他的4.0版本之后增加了对数据库访问对象（DAO）的封装，即MFC的DAO类，使得数据库开发人员可以通过Microsoft Jet数据库引擎访问数据库。 MFC DAO类使用Microsoft Jet数据库引擎操作位于系统数据库和用户数据库中的数据，它与基于ODBC的MFC数据库类截然不同，DAO通过Microsoft Jet访问数据，而MFC的ODBC类通过ODBC和ODBC驱动程序操作数据。一般来说，在访问Microsoft Jet数据库引擎，基于DAO的MFC类比基于ODBC的MFC类处理能力更强大。
(7.1 DAO data access Microsoft Jet database engine is a data management component, and many database tools are based on its implementation, such as MFC DAO classes, Microsoft Access, Microsoft Visual Basic, and some Microsoft Desktop Database Drivers. VC++ 4.0 version after he added to the database access object (DAO) of the package, that is, the DAO MFC classes, making the database developers can access the database, Microsoft Jet database engine. MFC DAO classes use Microsoft Jet database engine operating on the system databases and user data in the database, it is with the MFC ODBC database classes based on different, DAO to access data through the Microsoft Jet, and MFC s ODBC classes through ODBC and ODBC drivers to manipulate the data . In general, access the Microsoft Jet database engine, based on the MFC DAO ODBC-based MFC class analog processing power more powerful. )