Hi Waleed Seada,
By QDSCV Do you mean QueryableDomainServiceCollectionView? And if so, this is not something that OpenAccess can replace. The QueryableDomainServiceCollectionView is a class that the RadDomainDataSource uses in order to create queries that are then posted trough WCF RIA Services.
OpenAccess is an ORM tool which means that it is on the other end of the service and handles the actual database operation, and not the client side operations.
Please give us some light on what you are trying to achieve so that we can be of better help.
the Telerik team