1.	grouprules	List of rule rule definitions for all groups (individual user defined groups, conference groups, manager groups, etc.)
2.	user_columns	Metadata about columns in user_info
3.	user_data	User "variables" that control or modify the actual operation of the software.
4.	user_iface	Which user fields appear in which interface
5.	user_in_conf	When were users in what conferences?
6.	user_info	Basic information about users