A

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Q. Given the basic ER and relational models, which of the following is INCORRECT?

  • (A) an attribute of an entity can have more than one value
  • (B) an attribute of an entity can be composite
  • (C) in a row of a relational table, an attribute can have more than one value
  • (D) in a row of a relational table, an attribute can have exactly one value or a null value

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