[Serusers] Which database fields (table subscriber and aliases) are needed by ser?

Hi all i'm planing to create a simple application interface to administer subscriber and alias data directly in the mysql db backend (i will use Andreas Granig's userloc-cl module). Looking at the mysql database that comes with ser, there seem to be a lot of fields in the subscriber and aliases table that are not needed by ser itself but only by serweb. Do i get this right? If so, is there any specification of the fields that are required by ser (incl. valid value range) so i know which fields i have to administer? Are there any fields needed by ser which i may not touch? If there is no such documentation, maybe someone knows and would be willing to place a few comments to the table listings below? Thanks a lot for your help! Kind regards Frank subscriber ------------------------ phplib_id username domain password first_name last_name phone email_address datetime_created datetime_modified confirmation flag sendnotification greeting ha1 ha1b allow_find timezone rpid domn uuid aliases ------------------------ username domain contact received expires q callid cseq last_modified replicate state flags user_agent