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How Does Tuple-oriented Relational Calculus Differ From Domain-oriented Relational Calculus? |
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Answer» The tuple-oriented calculus uses a tuple variables i.e., variable whose only permitted values are TUPLES of that relation. E.g. QUEL The 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.g. QUEL The domain-oriented calculus has domain variables i.e., variables that range over the underlying domains instead of over relation. E.g. ILL, DEDUCE. |
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