Local databases, such as a Local Database Cache that can be synchronized with the server in the data tier by using Microsoft Synchronization Services for ADO.NET in Occasionally Connected Applications.

• 本地数据库；例如可使用偶尔连接的应用程序中的Microsoft Synchronization Services for ADO.；NET与数据层中的服务器进行同步的“本地数据库缓存”。