This week's book giveaway is in the Testing forum. We're giving away four copies of The Way of the Web Tester: A Beginner's Guide to Automating Tests and have Jonathan Rasmusson on-line! See this thread for details.
Ujjwal, Any well known database can handle the job (Oracle, db2, Sybase, mySql, postgresql, etc) - basic database operations and transactions are what they are meant to do. It's the machine that needs to have enough memory and CPU to be up to the job.