Any good sample for an updatable WCF Data Service implementation

I am looking for a good sample implementing an updatable WCF Data Service. I found this article on MSDN that shows a sample i开发者_StackOverflow社区mplementation using IUpdatable, but not sure if I understand this post. There are methods used in this post such as GetTable() and SubmitChanges(), whose implementation is not provided.

Appreciate any pointers.

Found this one most useful - http://blogs.microsoft.co.il/blogs/gilf/archive/2008/08/31/how-to-perform-crud-operations-in-ado-net-data-services-with-custom-provider.aspx

Thanks all for your replies.

Have you looked at Alex's blog here ? It also has links for creating Data Service for different providers.

Here is an example on IUpdatable implementation:

http://code.msdn.microsoft.com/IUpdateableLinqToSql

Hope this helps, Monica