Identify the primary key
Have a look at the example table from the previous video. As the database designer, you have to make a wise choice as to which column should be the primary key.
license_no | serial_no | make | model | year
--------------------+-----------+------------+---------+------
Texas ABC-739 | A69352 | Ford | Mustang | 2
Florida TVP-347 | B43696 | Oldsmobile | Cutlass | 5
New York MPO-22 | X83554 | Oldsmobile | Delta | 1
California 432-TFY | C43742 | Mercedes | 190-D | 99
California RSK-629 | Y82935 | Toyota | Camry | 4
Texas RSK-629 | U028365 | Jaguar | XJS | 4
Which of the following column or column combinations could best serve as primary key?
This exercise is part of the course
Introduction to Relational Databases in SQL
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