Which of the following sets of attribute characteristics defines the attribute First Name for the entity Employee?
- Non-unique, mandatory, not multi-valued
- Unique, mandatory, not multi-valued
- Unique, optional, not multi-valued
- Non-unique, mandatory, multi-valued
You Answered: D
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.