May I ask a question about Firebird .net provider 2.5.1.

I am using Firebird 2.1 

The OS is a Vista Business

I am able to create datasets and lists or grids that show data but it gives 
errors when I try to create an ADO.NET Entity  Data Model.  

For example: I add to the model only one  table with just two columns (AREA_ID 
integer, AREA_DESC varchar(30)). 

The table is added in the model but it gives errors like the ones bellow

Message 1 The data type of  the column 'AREA_ID' is not supported so the column 
'AREA_ID' in table 'Firebird.Firebird.AREAS' was excluded. 
C:\Users\i2suser\Documents\Visual Studio 
10\Projects\WpfTest1\WpfApplication1\Model1.edmx 0 1 WpfApplication1

Message 2 The column 'AREA_ID' on the table/view 'Firebird.Firebird.AREAS' was 
excluded, and is a key column.  The remaining key(s) were used and table/view 
has been created as read-only. C:\Users\i2suser\Documents\Visual Studio 
10\Projects\WpfTest1\WpfApplication1\Model1.edmx 0 1 WpfApplication1

Error 3 Error 75: Key Part: 'AREA_DESC' for type AREAS is not valid. All parts 
of the key must be non nullable. C:\Users\i2suser\Documents\Visual Studio 
10\Projects\WpfTest1\WpfApplication1\Model1.edmx 7 7 WpfApplication1

Error 4 Error 75: Key Part: 'AREA_DESC' for type AREAS is not valid. All parts 
of the key must be non nullable. C:\Users\i2suser\Documents\Visual Studio 
10\Projects\WpfTest1\WpfApplication1\Model1.edmx 20 11 WpfApplication1


So, may I ask if the .net provider supports EDM in Visual Studio 2010 / .net 4 
? Or, am I doing something wrong ?

Thanks,

Kostas Seferis


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