Oracle Forms

Hi, All

the source of my data block is from two tables Emp and Title. My select statements is:
select a.name, b.title, b.start_date, b.end_date from Emp a, Title b where a.id = b.emp_id

But at run time, I got "ORA-00918: column ambiguously defined"

the wrapped statement becomes:

SELECT ROWID,a.name, b.title, b.start_date, b.end_date from Emp a, Title b where a.id = b.emp_id

I run the query in SQL*PLUS, found out it was ROWID caused problem.

Can anybody tell me how to get rid of ROWID? or I missed something in datablock defination?

Thanks in adance.

Deborah