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" Hmm. At this point, I know that (at least in MySQL, which has no concept of RRNs; hopefully I'll know about DB2/400 later this week) you literally are not allowed to obtain an update cursor on a file that lacks a primary key. (You ask for an updateable result set, and it gives you a read-only one anyway). And it turned out that the tutorial Mark recommended *did* mention that you needed a primary key to get through the update-by-result-set example. But that remark was so inconspicuous that I didn't even fi..."^^<http://www.w3.org/2001/XMLSchema#string>
<http://archive.midrange.com/midrange-l/201301/msg01334.html>