NHibernate，Entity Framework，活动记录或linq2sql [英] NHibernate, Entity Framework, active records or linq2sql
问题描述
我的团队正在ASP.NET MVC中开始一个新项目，我们想知道什么技术用于数据访问。你如何决定哪一个是最好的？哪个具有最好的性能？
哪一个更容易使用和维护？
如果是.NET 4.0，请选择NHibernate或Entity Framework 。 NHibernate是更可扩展和一般更多的功能丰富。实体框架更适合那些宁愿拥有微软提供的公司。他们都是有效的选择，没有人发表了一个客观的重大打击的打击比较。这是更好的非客观比较之一：
http://ayende.com/blog/archive/2010/01/05/nhibernate-vs.-entity-framework-4.0.aspx < a>
如果是.NET 3.5或更早版本，请选择NHibernate。
http://stackoverflow.com/questions/380620/what-object-mapper-
http://stackoverflow.com/questions/249550/what-orm-frameworks-for-net-do-you-like-best
http://stackoverflow.com/questions/132676/which-orm-for-net-would-you-建议
2009年9月4日之后：
http://stackoverflow.com/questions/1469761/nhibernate-vs-entity-framework-vs-something-better
这就是说，事情改变了。现在NHibernate支持Linq，我认为NHibernate是在大多数情况下的明确选择。对于较长且相当及时的分析，请随时阅读：
My team is starting a new project in ASP.NET MVC, and we are wondering what technology to use for data access. How do you decide which one is the best? Which has the best performance? Which one is easier to use and to maintain?
If .NET 4.0, choose between NHibernate or Entity Framework. NHibernate is more extensible and generally more feature rich. Entity Framework works better for firms that would rather have what Microsoft provides. They are both valid options and no one has yet published an objective significant blow by blow comparison. This is one of the better non-objective comparisons:
http://ayende.com/blog/archive/2010/01/05/nhibernate-vs.-entity-framework-4.0.aspx
If .NET 3.5 or earlier, choose NHibernate.
Choosing Database and ORM for a .NET project
Which ORM tool should I use for .Net development
Easiest to learn and use .NET ORM framework?
Some suggestions on which .NET ORM to look at learning
http://stackoverflow.com/questions/380620/what-object-mapper-solution-would-you-recommend-for-net
http://stackoverflow.com/questions/249550/what-orm-frameworks-for-net-do-you-like-best
Best free ORM tools to use with .NET 2.0/3.5
http://stackoverflow.com/questions/132676/which-orm-for-net-would-you-recommend
After September 04, 2009:
O/RM Choice (not reliant on linq)
http://stackoverflow.com/questions/1469761/nhibernate-vs-entity-framework-vs-something-better
How to choose an object relational mapping for .net
That said, things change. Now that NHibernate supports Linq, I think NHibernate is the clear choice in the large majority of situations. For a longer and fairly up to date analysis, feel free to read this:
.NET and ORM - Decisions, decisions
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