where should ejabberd server maintenance presence information of User

Hi Support Team,

we have configured odbc support to ejabberd-1.1.4(IM Server) with MySql Database.

Can your any one tell me where should ejabberd server maintenance presence information (like Available, Busy, Away. etc.,) of particular user??

On Which table the ejabberd server stores presence information of particular user??

Thanks in Advance
Satya.