An index scan is less efficient than a full table scan.

Name: An index scan is less efficient than a full table scan.
Brand: Quizplus
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Question

Quizplus · Accepted Answer

This statement is false. A full table scan involves reading every row in a table, whereas an index scan only involves reading the relevant index entries. In many cases, an index scan can be more efficient than a full table scan, especially when retrieving a small subset of rows from a large table.

An Index Scan Is Less Efficient Than a Full Table