对Visual C++中提供的多种访问数据库的方法一ADO.ODBC.DAO及OLE DB等技术的基本架构和使用步骤进行了介-A variety of methods to access the　summary of Visual C++ provided the basic framework and steps to use technology and a ADO.ODBC.DAO OLE DB were introduced, and for each technical characteristics of each are analyzed, and then the various technical summary of the advantages and defects, provides a reference for those who set up a training appropriate choice of technical solutions.