程序1，2，3分别实现了vc++对access,BDE,DSN的访问；程序4串行化对象到数据字段，程序5从ODBC 动态读取数据，程序6 DAO组合框，程序7 ODBC的日期和时间 程序8 9，交互式的SQL工具；程序10在DLL中使用DAO-procedures were achieved vc right access, BDE, DSN visits; 4 Serial procedures objects to the data fields, procedures five dynam

日期处理工具,周与日期的互换,某周期的第一天,最后一天,同期/上期的换算等-Date processing tools, interchangeable week and date of the first day of a cycle, the last day of the same period/previous period conversion, etc.