It sounds like you have more than one piece of information for a given PK. In that case, you should be using two tables. Think about it in terms of invoices and lineitems. You go buy 3 things from CDW. You get one invoice indicating the date of purchase, the payer, the shipto address, CDW's invoice ID, etc. That's a record in the invoices table. But, you need to indicate the three lineitems. So, you have a lineitems table which has a FK back to the invoices table.

Same idea here.

My criteria for good software:
  1. Does it work?
  2. Can someone else come in, make a change, and be reasonably certain no bugs were introduced?

In reply to Re: Of Mysql, DBI and PK best practices by dragonchild
in thread Of Mysql, DBI and PK best practices by jimbus

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