Rails - Jul 2006 - i need help migrating an old table

i have this big table that has columns:
partnumber, 1piece-price-break, 10K-piece-price-break, 25k, etc...

i want to split this into two tables:
part_number, id

and

price_break, price, product_id


so that, you know, the price-break columns are not stuck at fixed 
values; different parts can have differnt numbers of price-breaks, etc

is there a ruby way to do this?
i have navicat, but i can''t think of a way to keep everything straight 
with it.


thanks,
travis

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