MS SQL Server - 93 - Star Join Optimization and Indexed Views MCQ

93 – Star Join Optimization and Indexed Views MCQ

1 / 25

1. What is the primary purpose of Star Join Optimization in SQL Server?

D. To encrypt sensitive data

A. To optimize query performance for complex joins

B. To improve indexing on columns

C. To create star schemas for data warehousing

2 / 25

2. In SQL Server, what is a star schema?

C. A database design that separates fact tables from dimension tables

B. A schema used for encryption

A. A schema with only one table

D. A schema used for data replication

3 / 25

3. What is the benefit of using Star Join Optimization for data warehousing queries?

B. Faster query performance for star schema queries

D. Simplified query writing

A. Reduced storage space requirements

C. Improved data security

4 / 25

4. Which SQL Server feature is used to implement Star Join Optimization?

A. Query Store

B. Indexing

C. Indexed Views

D. Partitioning

5 / 25

5. What is an indexed view in SQL Server?

D. A view with an index for improved query performance

A. A view created for data replication

B. A view with a WHERE clause

C. A view with a clustered index

6 / 25

6. What is the primary benefit of using indexed views?

A. Improved query performance for complex joins

C. Enhanced data encryption

B. Simplified query writing

D. Reduced storage space requirements

7 / 25

7. In SQL Server, what type of queries are most likely to benefit from indexed views?

C. UPDATE queries

D. Queries involving data replication

B. Queries with complex joins and aggregations

A. Simple SELECT queries

8 / 25

8. Which type of index is used in an indexed view for faster query performance?

B. Unique index

C. Clustered index

A. Non-clustered index

D. Composite index

9 / 25

9. In SQL Server, what is a materialized view?

A. A virtual view used for data replication

D. A view with a clustered index

B. A view with complex joins

C. An indexed view that stores precomputed results

10 / 25

10. What is the primary purpose of a materialized view (indexed view) in SQL Server?

D. To reduce storage space requirements

A. To create a view for data encryption

B. To improve query performance by storing precomputed results

C. To simplify query writing

11 / 25

11. In SQL Server, what happens when data in the underlying tables of an indexed view changes?

C. The indexed view is deleted.

B. The indexed view becomes read-only.

D. The indexed view is encrypted.

A. The indexed view is automatically updated.

12 / 25

12. What is the main drawback of using indexed views in SQL Server?

D. Limited support for data replication

A. Increased storage space requirements

B. Slower query performance

C. Complexity in query writing

13 / 25

13. In SQL Server, when is it recommended to use indexed views?

B. When the query performance benefits outweigh the storage costs

D. When working with non-relational databases

A. When dealing with small datasets

C. When using simple SELECT queries

14 / 25

14. What is the purpose of the NOEXPAND hint in SQL Server?

C. To create an indexed view

D. To encrypt data in indexed views

A. To force the use of indexed views in queries

B. To prevent the use of indexed views in queries

15 / 25

15. In SQL Server, what is a clustered index on an indexed view used for?

A. To improve query performance

D. To encrypt data in the view

C. To enforce data integrity constraints

B. To create a materialized view

16 / 25

16. What is a key consideration when creating an indexed view in SQL Server?

D. The type of data encryption used

A. The size of the underlying tables

B. The number of non-clustered indexes on the view

C. The complexity of the SELECT query

17 / 25

17. Which SQL Server edition supports the use of indexed views?

D. SQL Server Enterprise Edition

C. SQL Server Developer Edition

A. SQL Server Express Edition

B. SQL Server Standard Edition

18 / 25

18. In SQL Server, what is the primary benefit of using a clustered index on an indexed view?

D. Reduced storage space requirements

B. Simplified query writing

A. Improved query performance

C. Enhanced data encryption

19 / 25

19. Which SQL Server command is used to create an indexed view?

B. CREATE VIEW

A. CREATE INDEX

D. CREATE VIEW INDEXED

C. CREATE MATERIALIZED VIEW

20 / 25

20. What is the primary purpose of the WITH SCHEMABINDING option when creating an indexed view in SQL Server?

D. To specify the schema for the underlying tables

A. To specify the schema for the view

B. To prevent changes to underlying tables that would affect the view

C. To encrypt the indexed view

21 / 25

21. In SQL Server, what is a limitation of using indexed views?

D. They cannot be created on tables with clustered indexes.

A. They cannot be used in SELECT queries.

B. They cannot contain aggregations.

C. They cannot reference user-defined functions.

22 / 25

22. How can you improve the performance of indexed views in SQL Server when dealing with frequent data changes in underlying tables?

A. By using the NOEXPAND hint in queries

B. By using a composite index on the indexed view

D. By using a hash index on the indexed view

C. By limiting the number of columns in the view

23 / 25

23. In SQL Server, what is the purpose of the EXPAND VIEWS query hint?

D. To encrypt data in indexed views

B. To force the use of indexed views in queries

A. To prevent the use of indexed views in queries

C. To create an indexed view

24 / 25

24. Which SQL Server feature allows you to query indexed views in a distributed environment?

A. Linked Servers

C. Always On Availability Groups

D. Transparent Data Encryption (TDE)

B. Replication

25 / 25

25. What is the primary benefit of using indexed views for business intelligence (BI) queries?

D. Reduced storage space requirements

B. Simplified query writing

A. Improved data encryption

C. Faster query performance for BI reports

Your score is

MS SQL Server – 93 – Star Join Optimization and Indexed Views MCQ