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Explain 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. EXAMPLE: QUEL The domain-oriented calculus has domain variables i.e., variables that range over the underlying domains instead of over relation. Example: ILL, DEDUCE. The tuple-oriented calculus uses a tuple variables i.e., variable whose only permitted values are tuples of that relation. Example: QUEL The domain-oriented calculus has domain variables i.e., variables that range over the underlying domains instead of over relation. Example: ILL, DEDUCE. |
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