You are designing an ASP.NET Web application. You have the following requirements:
– Relational database tables must automatically map to to .NET classes.
– The data access layer must be able to target database engines other than Microsoft SQL Server.
You need to recommend a data access technology.
Which technology should you recommend?

A.
LINQ to SQL

B.
Entity Framework 4

C.
direct ADO.NET calls

D.
.NET Framework Data Provider for OLE DB

Explanation:
Only Entity Framework support target database engines other than Microsoft SQL Server