Table to Matching Gifts

What table can I find matching gifts and soft credits in?  I'm trying to extract some contribution data for a resident company and he wants the totals to include soft credits and matching gifts.  I don't see anything for that in the t_contribution table.  Where can I find this so I can add it to my query?  I'm in a bit of a time crunch and need to get this done today, so if anyone has a quick answer....I'd greatly appreciate it!!!

Teresa