Question 70
An “employee” table is partitioned into four tables. Which table does not satisfy the condition that “items other than keys are subordinate only to key items”?
In this example, the underlined item represents the primary key.
Employee | ||||||||
Employee number | Name | Birthdate | Salary | Postal code | Address | Position | Department | Work location |
a) | ||
Employee number | Salary | Work location |
b) | ||
Employee number | Name | Birthdate |
c) | ||
Employee number | Position | Department |
d) | ||
Employee number | Postal code | Address |
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