I'm trying to set up a many-to-many relation with cmp and XDoclet, and what do I find in the XDoclet web-site best practices ? "Try to avoid compound primary keys".
I've been working in banking software for more than 16 years, and 90% (or maybe more) of the keys I've used have lots of fields. I thought we were developing professional applications. How can I avoid using compound keys?
Even the simplest entity, the customer, has a compound key: document type and document number (and sometimes more fields). What should I say to my users? We would rather use a single field customer_id because of technical reasons?
I don't know if this is a Xdoclet, EJB, J2EE, containers or whatever issue, I think people defining standards have to get closer to real business solutions.
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