The WebMembers table stores the list of members of a SharePoint site.
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|
|WebId||uniqueidentifier||GUID of the site. Found in the Webs table.|
|UserId||int||ID of the user. Found in the UserInfo table.|
|STSToken||varbinary||Token for all of the site groups to which this user belongs, either directly or indirectly.|