A family of Microsoft relational database management systems designed for ease of use.
> Let say if we ignore about the database structure
Those are fighting words. Most regulars here, and most database designers in general would focus FIRST on the database design. You may be tired to explain it to us, but please take a deep breath and humor us. Db design rules' violations can (will) come back to haunt you (or your successor). A correct database design makes life much easier.