Okay ... for your problem domain, pull them back into the Death and Wedding table (but name them something better than xxx_1 and xxx_2 --- groom_first and bride_first may become un-pc but I'd worry about the downstream maintenance dev finding my home address than a PC fascist).

As for the abstraction to announcements - I'd model the domain before I'd model a model of the domain. Once you have a handle on the domain, then I'd look for further abstractions based on biz requirements. I've been burned way too many times by meta systems that make adding a new type fairly easy but asking a simple question like "how many deaths notices did we have for November" caused a monster headache of building a slew of objects and then asking each object are you of type "death" and did you occur in "november." While a straight sql to answer that question would take milliseconds - going through the object hierachy takes hours.

-derby

In reply to Re^3: Mapping objects to database tables by derby
in thread Mapping objects to database tables by clinton

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