I need to form the equivalent of a Union Join in Oracle 8i, even though a Union Join doesn't appear to be supported in 8i. I might be able to manipulate a Full Outer Join to get the results I need ...

Oracle Corp.’s agreement to buy Siebel Systems Inc. immediately raised questions about the future of Siebel’s CRM OnDemand service — a venture in which Oracle rival IBM Corp. is deeply involved.