Hii,
xmlns:j4j="http://jbpm.org/jbpm4jsf/core" This j4j tag is used for retrieving data from database and query the database, The same thing we want to do, We are creating our own database, so we also want to do our own tags like j4j for querying the data. So just explain the procedure for achieving this...in jbpm framework.
Thanking you
--Mansingh