I've examined the sql code that creates the tables and all the relationships when the jbpm database is created. The only relationships I see for bytearray, based on foreign keys are: jbpm_bytearray's filedefinition_ has a foreign key relationship to jbpm_moduledefinition (but filedefinition_ is empty in the rows in question) jbpm_variableinstance's bytearrayvalue_ has a foreign key relationship to jbpm_bytearray jbpm_byteblock's processfile_ has a foreign key relationship to jbpm_bytearray (Ok, there are also some relationships from the log, but that's not important right now). jbpm_variableinstance has a relationship to a jbpm_processinstance but not to jbpm_processdefiniton, exept indirectly. What am I missing? I've looked at the hbm.xml files and found the same relationships and nothing else. Did something change with Jbpm 3.1? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3983442#... Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&a...