Yes. There is a better way to model that.
Oh, you wanted a suggestion. How about including a LOADS table that has (at
least) 3 colums
truck_id
cargo_id
active_flag
That way when cargo is moved to a different truck you add a new record to
the LOADS table and update the old one (setting the active_flag to false)
Kevin
-----Original Message-----
Sent: Thursday, November 06, 2003 9:45 AM
To: Multiple recipients of list ORACLE-L
I remember seeing this question asked on another forum some time back. I
dont like the solution the guy had and Im wondering how some of you might
solve problem. Im giving a low level generic example.
Lets say you have a parent-child relationship. The parent table is 'TRUCKS'
and the child table is 'CARGO'. The foreign key to CARGO tells which truck
the cargo is loaded on. When the cargo is moved to another truck, the
foreign key is updated.
I dont like this approach. it causes contention. what is a better way to
design this?
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