数据访问
SQL CE 概述
l SQL Server 的轻量级版本
l 本地数据存储
Ø 远程 SQL Server 数据
Ø 用户输入
Ø Web service 结果
l 管理受一定限制
l 支持 Transact SQL 的一个子集

| SQL Server CE is basically a light weight version of SQL Server designed to provide a local data storage mechanism for Smart Devices.
| Local data storage is a common need for most Smart Device applications, and CE databases provide a more reliable, scalable, and secure mechanism than other options like the file system or registry. Common scenarios that utilize a CE database include caching data retrieved from a SQL Server for offline use, storing user input for later synchronization with a remote server, and storage of data returned by Web Services.
| The focus of SQL CE is on data storage and retrieval. Administrative options are limited but effective as are the client tools. Data manipulation is performed by executing SQL commands consisting of a subset of the Transact SQL language.