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one edmx multiple data sources?

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lucence View Drop Down
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    Posted: 06-Dec-2008 at 12:06am
currently for ADO.NET EF, we could make it support for multiple databases by adding respective edmx files.
 
but for DevForce EF, does it support 1 edmx and shift to different databases at anytime?
 
 
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kimj View Drop Down
IdeaBlade
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Post Options Post Options   Quote kimj Quote  Post ReplyReply Direct Link To This Post Posted: 06-Dec-2008 at 2:21pm
DevForce EF is built "on top" of ADO.NET EF.  The limitation of 1 EDMX = 1 database still holds.  In DevForce, though, you can include multiple entity data models in a single DevForce "domain" model, as is shown in several of the tutorials. 
 
On the latter part of your question about shifting to a different database - I assume you mean having a single CSDL (conceptual model) with different SSDL (storage model) definitions?  That is doable, and one of the reasons why the EDMX at runtime actually consists of 3 separate resources (conceptual, storage and mapping).  DevForce doesn't do anything to help or hinder this support, and I'd recommend the ADO.NET EF forum (http://forums.microsoft.com/MSDN/ShowForum.aspx?ForumID=533&SiteID=1) or other MS resources for help on the mechanics of separating the models.
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