CompTIA ITF+ Practice Test 2025 – All-in-One Resource for Complete Exam Success!

Question: 1 / 400

Which relational database construct ensures valid values for a column?

Index

Join

Constraint

A) Indexes help speed up data retrieval but do not ensure validity.

B) Joins allow for viewing and manipulation of data from different tables but do not ensure validity for a single column.

C) Constraints are rules that ensure valid values for a column, such as a data type restriction or a minimum/maximum value.

D) Views are virtual tables that display data from one or more tables but do not ensure validity for a single column.

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