Describe the process in steps, please. What tools do you use for it?
closed as not a real question by gbn, Marian, bernd_k, Derek Downey, eiefai Feb 19 '11 at 18:41
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Start with "database design" on Wikipedia.
Otherwise, your question is far too broad.
What you don't do is start knocking out some CREATE TABLE statements, or design as go along writing client side code