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All,

I'm working with a .NET developer and a DBA who are familiar with
non-i RDBMS', namely Oracle and MS SQL Server.

I'm trying to get them to understand the the i allows for a commitment
control / isolation level of *NONE. Which means, for instance if you
run the statement:
update mytable
set someColumn = 'A'
where someOtherColumn = 'B'

and say for instance 100 records have someOtherColumn = 'B' but that
one of those other records is currently locked by another job, the i
will happily update the first X number of records it can, stopping
when it hits the locked record, leaving the locked record and any
remaining records unchanged.

Both the developer and the DBA are confused by this, their first comments..
"Doesn't DB2 guarantee ACID compliance?"
"In every other db, a single statement like the above is done Atomically."

I guess I'm not smart enough to explain it right, as all I get is
shock and appalled looks when I try to explain that we need our .NET
code to do an explicit BeginTransaction() and a Commit() or
Rollback().

Can anybody on the list provide information/links I can use to help
counter the idea that DB2 for i is "weird".

Thanks!
Charles

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