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So basically I don't see the performance hit when using DDL over DDS. Am I wrong?No, you're right, Rob, except in one specifc case: a non-UNIQUE keyed physical far outperforms all other keyed approaches, including UNIQUE keys, NON-UNIQUE indexes or even non-UNIQUE logicals. It's a very narrow issue, but then again, for those tables that only have one key, it's enough to make you take a look at it.
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