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In a relation, the order of the rows matters.

  • A.
    True
  • B.
    False

Answer: B

Correct answer: False

Row order carries no meaning in a relation: a relation is a set of tuples, and a set has no inherent sequence. A query that needs its output in a particular order must request it explicitly, and any apparent ordering in a result set without such a request is an accident of storage and must not be relied on.

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