Just some preliminary questions before we can really start thinking about this:

1. Is your data going to reside in a database?
2. Do you know how much tables will be required beforehand?
3. Is the structure of each table known beforehand (number of fields; type of field; ...?

Having recently been dealing quite a lot with databases, I'm of course biased in this direction ...

CountZero

"If you have four groups working on a compiler, you'll get a 4-pass compiler." - Conway's Law