Which Database is better compare to all platforms in performance,security,cost point of view?
Can you please tell me which database is better and why that one is good compare to others?
It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, see the FAQ.
I'm afraid your question is a bit too broad to answer here...