这些扩展包含可以从可扩展表单描述语言(Extensible Forms Description Language,XFDL)表单内部调用的函数包。
These extensions contain packages of functions that you can call from inside Extensible Forms Description Language (XFDL) forms.
在对数据库的操作中,采用数据库描述语言SQL实现对关系数据库的访问,应用程序通过调用ODBC函数,向数据库提交SQL请求,避开了对数据库的直接操作。
In this system, SQL is used to realize the access to Database, the application program use ODBC function, give a SQL request to Database will avoid the direct access to Database.
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