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Purpose of a primary key
easy
5 pts · first answer counts
data-modeling
sql
Purpose of a primary key
What is the main purpose of a primary key in a table?
Choose one answer
A.
To make the table load faster from files
B.
To store the date of the last update
C.
To uniquely identify each row, with no duplicates and no NULLs
D.
To encrypt sensitive columns
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