When an LDAP user is given a permission to view a page in Confluence, the permission will be saved in the CONTENT_PERM and CONTENT_PERM_SET tables.

If an individual LDAP user is given a permission via the "Global Permissions", the permission will be set in SPACEPERMISSIONS table.

When the LDAP user is removed from the LDAP repository, Confluence will automatically remove the user from the users list however the associated permission is not removed from the database.