Domain and Tuple relational calculus

tuples tuple-relational-calculus
simplfuzz picture simplfuzz · Apr 22, 2009 · Viewed 11.9k times · Source

Is there a "real" difference between the above two? Other than the tiniest minute difference between their syntax?

Answer

mayank picture mayank · Sep 28, 2011

The tuple-oriented calculus uses a tuple variables i.e., variable whose only permitted values are tuples of that relation. E.g. QUELThe domain-oriented calculus has domain variables i.e., variables that range over the underlying domains instead of over relation. E.g. ILL, DEDUCE....The tuple-oriented calculus uses a tuple variables i.e., variable whose only permitted values are tuples of that relation. E

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