These attributes can be defined using Transact-SQL statements, or through the properties and attributes of database application programming interfaces (APIs) such as ADO, ADO.NET, OLE DB, and ODBC.

• 这些特性可以使用Transact-SQL语句或通过数据库应用程序编程接口(API；如ADO、ADO.；NET、OLE DB和ODBC)的属性和特性来定义。