Where can I find documentation about the tables and fields?

Question

I would like to understand what each field of each table does. Possible values for each of them would also be very useful. Where can I find this documentation?

Answer 1

I think there is no schema definition page.

Answer 2

Gideon commented on http://www.question2answer.org/qa/2946/where-can-i-find-detailed-tables-information

Look at the comments in function qa_db_table_definitions() in qa-include/qa-db-install.php