Alexander Sidorov wrote:
Hello!

OpenLink EF provider is great in that it can be used with almost any relational database. But unfortunately it doesn't work without Virtuoso. It would be great to move the database independence mechanism from Virtuoso to the provider itself. I have no idea how difficult it is to implement... but it would be a great competitor for DevArt providers.
When you de-construct EF you will find that to do it right you need a Virtual DBMS. Virtuoso is a VDBMS :-) Unlike ODBC, you cannot simply write an EF compliant data providers that actually works with acceptable performance. Entity Frameworks is the commencement of Microsoft into the very terrain already covered by Resource Description Framework :

Mappings:

Entity vs. Resource .
.NET Runtime vs. Web .
Both are about Concrete interaction with a Concrete Conceptual Layer exposed via Entity Relationship Graphs.

Anyway, we will take a look at DevArt's stuff and also provide some feedback re. what they are doing.

Kingsley

Regards,
Alexander
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Regards,

Kingsley Idehen       Weblog: http://www.openlinksw.com/blog/~kidehen
President & CEO OpenLink Software Web: http://www.openlinksw.com





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