SQL Server Data Access Components (SDAC) is a library of components that provides access to the Microsoft SQL Server databases. SDAC connects to SQL Server directly through OLE DB, which is a native SQL Server interface.

mapx 5.0中文开发指南，MapX是美国MapInfo公司在其开发的可视化地图组件DataMap基础上，向用户提供 的具有强大地图分析功能的ActiveX控件产品。MapX以OCX的方式提供了真正的对象 连接与嵌入式OLE的地理信息系统应用开发方案。(Mapx Development Guide)