need connect SQL through a DLL programming in c++

Please, I need an example made in c++ to continue with my work or a compiled dll with exposed methods.

Thanks

Matias

What system?
What database?
What compiler?
What Database API/class model?
What type of dll - naitive or COM?

What system?=Window 2000
What database?=SQL
What compiler?= Microsoft c++
What Database API/class model?
What type of dll - naitive or COM?= native

Thank's

http://msdn.microsoft.com/library/de...bcoverview.asp