Master SQL Indexes with these handpicked MCQs covering clustered vs non-clustered indexes, unique indexes, composite keys, and performance optimization. Perfect for reinforcing real-world indexing concepts and best practices.
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Which index physically orders the table’s rows based on key values?
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Question 3 of 15
3. Question
How many clustered indexes can a table have?
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Question 4 of 15
4. Question
Which index type allows multiple entries per key value?
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Question 5 of 15
5. Question
What is the main difference between a clustered and a non-clustered index?
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Question 6 of 15
6. Question
Which type of index can improve performance on multiple column searches?
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Question 7 of 15
7. Question
Which of these is a disadvantage of having too many indexes?
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Question 8 of 15
8. Question
In SQL Server, which option ensures index data stays in sync with table changes?
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Question 9 of 15
9. Question
Which index type is best suited for text search in large documents?
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Question 10 of 15
10. Question
Which SQL clause is used to create an index?
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Question 11 of 15
11. Question
In MySQL, what does the USING BTREE option specify?
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Question 12 of 15
12. Question
Which index can enforce column uniqueness automatically?
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Question 13 of 15
13. Question
What is an “included column” in a non-clustered index (SQL Server)?
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Question 14 of 15
14. Question
Which database index type is optimal for columns with low cardinality (few distinct values)?
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Question 15 of 15
15. Question
If a query frequently searches using a WHERE clause on multiple columns, the best approach is to…
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Summary
These SQL Index MCQs covered clustered, non-clustered, unique, composite, bitmap, and full-text indexes along with performance trade-offs. Use them to master indexing strategies for faster queries and efficient database design.
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