Defines the Moodle component which added this group membership (e.g. 'auth_myplugin'), or blank if it was added manually. (Entries which are created by a Moodle component cannot be removed in the normal user interface.)
itemid
BIGINT
19
0
If the 'component' field is set, this can be used to define the instance of the component that created the entry. Otherwise should be left as default (0).
