IF they're ads you've sold yourself, you can put whatever you want into a database.

But trying to put AdSense into a database would be kinda silly, IMHO. That's just not how it works. It's not a matter of legality, it's a matter of intelligent site structure.

Use an include in your page template to hold the AdSense code. Whether the pages are dynamic or static, once the code is properly in place, AdSense takes it from there.

Generally speaking, if it's a page served up on an Internet website then it's allowed. If it's NOT a page served up on a website then it's not allowed. The fact that the information is in a "database" or not doesn't really enter into it.

if it's a page served up on an Internet website then it's allowed

that's interesting and probably true... but I may have to talk to google myself, anyway