The SiteGroupMembership table stores the members of the cross-site groups.
Warning Modifying the database schema or database structures is unsupported. Changes that you make to the database contents may be overwritten when you install updates or service packs for Windows SharePoint Services, or when you upgrade an installation to the next product version.
|Column name||Data type||Description|
|SiteID||uniqueidentifier||ID of the site to which the cross-site group belongs. GUID links to the Sites table.|
|GroupID||int||Group ID of the cross-site group. Found in the SiteGroups table.|
|MemberID||int||tp_ID of the user. Found in the UserInfo table.|