Categories: Groups 

Notes:  We query groups whenever we need to test access of a specific userid to a specific group, or (in reverse) for the precise membership of a specific group.

Note that all userid wildcard rules from grouprules get expanded into one row in groups per userid that matches the wildcard! Thus for many reasons, changing a group is expensive, but checking access (or membership) is very fast.

Name	Type	Index	Null?	Default
userid	varchar(240)	I		NULL	userid affected by this entry
owner	varchar(240)	I		NULL	identifies group (see grouprules)
name	varchar(240)	I		NULL	identifies group
access	int(11)	I		'0'	access level
active	tinyint(4)	I		'0'	1 => real rule; 0 => rule being rebuilt; 3 => about to become a real rule
priority	int(11)			'0'