At last, the data access technology such as ADO, OLE DB, ODBC and DAO is compared and ADO is selected to access the database.

• 最后，对ADO、OLE DB、摘要oDBc、DAO等各种数据库访问技术进行综合比较，并结合机场实际情况，采用ADO方式实现对数据库的访问，并对数据访问代码进行分析。