ADO.NET Entity Framework 是微软以 ADO.NET 为基础所发展出来的对象关系对应 (O/R Mapping) 解决方案，早期被称为 ObjectSpace，现已经包含在 Visual Studio 2008 Service Pack 1 以及 .NET Framework 3.5 Service Pack 1 中发表。    <br />    <ul>     <li class="unordered">Applications can work in terms of a more application-centric conceptual model, including types with inheritance, complex members, and relationships.<br /> <br /> </li>     <li class="unordered">Applications are freed from hard-coded dependencies on a particular data engine or storage schema.<br /> <br /> </li>     <li class="unordered">Mappings between the conceptual model and the storage-specific schema can change without changing the application code.<br /> <br /> </li>     <li class="unordered">Developers can work with a consistent application object model that can be mapped to various storage schemas, possibly implemented in different database management systems.<br /> <br /> </li>     <li class="unordered">Multiple conceptual models can be mapped to a single storage schema.<br /> <br /> </li>     <li class="unordered">Language-integrated query (LINQ) support provides compile-time syntax validation for queries against a conceptual model. <br /> </li>    </ul>    <br />    <p><strong>项目主页：</strong><a href="http://www.open-open.com/lib/view/home/1327477269546" target="_blank">http://www.open-open.com/lib/view/home/1327477269546</a></p>