Hi,
I'm talking about the following database structure:
MEASUREMENTS
|
----------CHANNELS
|
--------------- MEASURANDS
CHANNELS HasMany MEASURANDS via channel_id (int)
MEASURANDS has id in, date (DateTime), value (float)
Now I would like to make sure, that there are no MEASURANDS with the
same date and channel_id.
I don't really know, how to do it. A composite key might be one
approach, but I don't want to change every .id call within the
programme.
I would like to use something like a Composite index, which wouldn't
require to change the code at Measurements and other parts of the
application.
I don't know, if AR/NHibernate supports such thing or if I should try
to implement this via business logic.
Any suggestions?
Thanks,
Flo
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