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Which of the following sets of attribute characteristics defines the attribute First Name for the entity Employee?

  1. Non-unique, mandatory, not multi-valued
  2. Unique, mandatory, not multi-valued
  3. Unique, optional, not multi-valued
  4. Non-unique, mandatory, multi-valued

You Answered: C
Correct Answer: A

The attribute First Name attribute is non-unique because the value for First Name does not uniquely identify an instance of Employee. It’s mandatory because a value must be assigned to the attribute when the Employee is created. It’s not multi-valued because there can be only one value for the attribute in each instance of Employee.