in reply to Re^4: OO concepts and relational databases
in thread OO concepts and relational databases
Wrong. That is completely and utterly wrong. RDBMSes support HAS-A relationships, in that a lineitem record HAS-A invoice record that it is on. Set theory (which RDBMSes are based on) is all about HAS-A relationships. The only IS-A relationship is the relationship between the specific record and the table it lives in. The person you are attempting to lay the smack-down is absolutely correct.
You might do well to rethink exactly what an IS-A relationship is vs. a HAS-A relationship and how normalization works with that.
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We are the carpenters and bricklayers of the Information Age.
Then there are Damian modules.... *sigh* ... that's not about being less-lazy -- that's about being on some really good drugs -- you know, there is no spoon. - flyingmoose
I shouldn't have to say this, but any code, unless otherwise stated, is untested