A record type is stored in the form of a virtual page having many properties (called container).
So a page name is generated using some md4 and then all the property values are stored as if they belonged to this *virtual* page.
Which tables? they are distributed over all the property-values tables. To get to these values you have to first look into the wiki page table and find out the generated name of the wiki page and then use that to find values in other tables. Hope that makes sense :)
Somebody, please correct me if I am wrong here. :)