Entity Framework版本历史概览

转自:http://www.cnblogs.com/fecktty2013/archive/2014/09/26/entityframework-overview.html

EF版本	.net framework和IDE版本	主要功能
EF（or EF3.5）	Visual Studio 2008 SP1 (.NET 3.5 SP1)	基本的O/R映射支持，使用DB First开发模式
EF 4	Visual Studio 2010 (.NET 4.0)	支持POCO实体 延迟加载 提高单元测试能力 自定义的代码生成机制 支持Model First开发模式
EF 4.1	NuGet	提供简化的DbContext接口 支持Code First开发模式
EF 4.1.1	过渡版本	支持Power Tools工具
EF 4.2	过渡版本	解决bug并优化
EF 4.3	Visual Studio 2010 (.NET 4.0)	基于Code First开发模式的代码迁移策略 Migrations
EF 4.3.1	Visual Studio 2012 (.NET 4.5)	提供对 LocalDb 数据库的支持
EF 5	Visual Studio 2012 (.NET 4.5)	提供对枚举类型的支持 Table-Valued functions表值函数 空间数据类型（spatial types） 整体性能优化提升 实体模型设计器、多图模型 批量导入存储过程
EF 6	Visual Studio 2013 (.NET 4.5)	Power Tools加强 EF脱离Visual Studio和.NET通过NuGet单独发布 可配置不稳定连接的重试次数等 支持.NET 4.5中基于Task的异步编程模式 Async Query and Save 优化的配置选项 Code-Based Configuration 支持依赖注入和服务定位 Dependency Resolution 低级的EF拦截器及SQL日志 Interception/SQL Loggin 使用Mock单元测试 using a mocking framework or writing your own test doubles 使用已有的DbConnection创建DbContext 提升事务支持 Improved Transaction Support  优化LINQ to Entities查询性能 优化(View Generation)性能 支持自定义实现Entity的Equals和GetHashCode方法 DBSet.AddRange/RemoveRange DbChangeTracker.HasChanges 扩展的SqlFunctions，SqlCeFunctions
EF 6.0.1	Visual Studio 2013 (.NET 4.5)	fix some performance issues during warm-up for EF models.
EF 6.0.2	Visual Studio 2013 (.NET 4.5)	The tooling for Visual Studio 2012 and Visual Studio 2013 is available on the Microsoft Download Center. You only need to install the tooling if you want to use Model First or Database First
EF 6.1	Visual Studio 2013 (.NET 4.5)	Tooling consolidation provides a consistent way to create a new EF model. This feature extends the ADO.NET Entity Data Model wizard to support creating Code First models, including reverse engineering from an existing database. These features were previously available in Beta quality in the EF Power Tools. Handling of transaction commit failures provides the CommitFailureHandler which makes use of the newly introduced ability to intercept transaction operations. The CommitFailureHandler allows automatic recovery from connection failures whilst committing a transaction IndexAttributeallows indexes to be specified by placing an [Index] attribute on a property (or properties) in your Code First model. Code First will then create a corresponding index in the database The public mapping API provides access to the information EF has on how properties and types are mapped to columns and tables in the database. In past releases this API was internal