Ji-Woo is helping a supervisor create a database of all employees. The supervisor points out that there is more than one person
with the same name, and there are concerns about their records getting confused. Ji-Woo explains that every database record will have a unique ____ to identify it.
<h3>Ji-Woo is helping a supervisor create a database of all employees. The supervisor points out that there is more than one person with the same name, and there are concerns about their records getting confused. Ji-Woo explains that every database record will have a unique <u>system</u> to identify it.</h3>
