MySQL - Database Design Best Practices MCQ

MySQL – Database Design Best Practices MCQ

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1. What is the primary goal of understanding system requirements before designing a MySQL database?

To design effective SQL queries

To guide the database design process

To identify potential index columns

To select data types

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2. What is the purpose of database normalization in MySQL?

To improve query performance

To complicate the database structure

To increase data redundancy

To reduce data duplication and dependency

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3. Which data type is suitable for storing whole numbers in a MySQL database?

INT

DATE

VARCHAR

FLOAT

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4. What role does the primary key play in a MySQL database?

To improve query performance

To ensure data consistency

To enforce data duplication

To create relationships between tables

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5. What is the primary purpose of creating indexes in a MySQL database?

To simplify SQL query writing

To reduce data redundancy

To enhance query performance

To store large data sets

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6. When should you consider using the NULL value in MySQL columns?

To improve query performance

When no other value can be assigned

For primary key columns

Whenever possible

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7. What is the primary benefit of partitioning large tables in MySQL?

Increased data redundancy

Improved data duplication

Enhanced data consistency

Better query performance

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8. How can you optimize SQL queries for a MySQL database?

By using appropriate indexes

By including unnecessary columns in SELECT

By normalizing the database structure

By using a wide range of data types

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9. Which feature of MySQL allows you to encapsulate business logic within the database?

Primary keys

Triggers and stored procedures

Data types

Foreign keys

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10. What is the primary purpose of using transactions in MySQL?

To optimize SQL queries

To reduce the database size

To maintain data consistency

To encapsulate business logic

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11. What strategy can you employ to ensure scalability in a MySQL database design?

Avoiding normalization

Using the NULL value for all columns

Using sharding, clustering, or replication

Implementing data duplication

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12. Why is it important to have a backup and recovery strategy in database design?

To increase data redundancy

To maintain data integrity

To improve query performance

To avoid database normalization

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13. What role does documentation play in MySQL database design?

It reduces data redundancy

It complicates the design process

It improves query performance

It helps in better understanding and maintenance

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14. How can you identify performance bottlenecks in a MySQL database design?

By using as many data types as possible

By creating indexes on all columns

By avoiding stored procedures and functions

By testing the design under realistic conditions

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15. What is the significance of following MySQL-specific best practices in database design?

They require additional server resources

They are optional and have no impact

They complicate the design process

They enhance the overall robustness and performance

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16. What is the primary purpose of testing the database design under realistic conditions?

To reduce the number of indexes

To introduce data redundancy

To identify data types

To uncover performance bottlenecks

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17. What should be considered when choosing data types for columns in a MySQL database?

Use default values for all columns

Always use the largest data type available

Use VARCHAR for all text columns

Choose data types based on the nature of the data

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18. Which statement accurately describes the role of partitioning in MySQL for large tables?

It improves query performance

It increases data redundancy

It prevents data duplication

It simplifies data retrieval

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19. What is the recommended approach to handle the NULL value in MySQL columns?

Use default values for all columns

Normalize columns with NULL values

Avoid NULL values entirely

Use NULL whenever possible

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20. How can you effectively plan for future scalability in a MySQL database design?

Use a single table for all data

Avoid planning for scalability entirely

Use the largest data types for all columns

Use sharding, clustering, or replication

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21. What is the primary advantage of using automation for database backup and recovery in MySQL?

It increases data redundancy

It ensures consistency and reduces human error

It simplifies SQL query writing

It reduces query performance

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22. Which factor should be considered when determining the frequency of backups in MySQL?

The importance and update rate of the data

The location of the backup files

The use of stored procedures and functions

The size of the backup files

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23. What is the recommended method for securing backup files in MySQL?

Implement encryption for backup files

Store backup files on the same server

Avoid using compression during backup

Use NULL values for all columns

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24. What is the primary purpose of having a well-documented database design?

To increase data redundancy

To complicate the design process

To improve understanding and maintenance

To enhance data consistency

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25. Which option is a best practice for handling password authentication in MySQL database design?

Avoid specifying a password in the -p option

Store passwords in plain text files

Include the password in backup files

Use the same password for all databases

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