Hi
Have a look here for MKTPL_ATTR http://help.sap.com/saphelp_nw04/helpdata/de/8d/4cb2188716e8428c84bef5140d19d1/content.htm
It shows you that the source tables are CABN and AUSP.
0CRM_MKTELM5_ATTR is based on table CRM_MKTPL_ATTR, CGPL_TASK and CGPL_PROJECT
hope that clarifies
Martin