In the table called Perform Machine Operations,which is the most likely primary key?
A)Equipment Number.
B)Job Operation Number.
C)Machine Operation Number.
D)Machine Operations List Number.

Question

Quizplus · Accepted Answer

A primary key should be unique and identifiable for each record in the table. Equipment Number and Job Operation Number may not be unique for each machine operation. Machine Operations List Number may also not be unique if there are multiple lists with the same number. Therefore, the most likely primary key is the Machine Operation Number, which should be a unique identifier for each machine operation.

In the Table Called Perform Machine Operations,which Is the Most