MySQL - Data Modification Statements MCQ

MySQL – Data Modification Statements MCQ

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1. What is the primary purpose of MySQL data modification statements?

Data retrieval

Data insertion

Data modification

Data analysis

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2. Which MySQL statement is used to insert new rows into a table?

SELECT

UPDATE

DELETE

INSERT

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3. What does the UPDATE statement in MySQL allow you to do?

Modify existing data

Retrieve data

Add new columns

Delete rows

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4. What is the primary use of the DELETE statement in MySQL?

Add new rows

Retrieve data

Remove rows

Update existing data

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5. Which MySQL statement is used to modify existing data in a table?

UPDATE

INSERT

SELECT

DELETE

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6. In MySQL, what does the INSERT statement allow you to do?

Retrieve data

Add new rows

Modify existing data

Delete data

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7. What is the purpose of data modification statements in MySQL?

Data analysis

Data modification

Data retrieval

Data insertion

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8. When is it essential to wrap data modification statements in transactions?

When updating data

When using DELETE statements

Only in SELECT statements

Never

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9. Which MySQL statement is used for removing rows from a table based on specified conditions?

DELETE

INSERT

UPDATE

SELECT

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10. What is the primary use of the UPDATE statement in MySQL?

Adding new data

Modifying existing data

Retrieving data

Removing rows

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11. How can data modification statements be used for data cleanup in MySQL?

By adding new data

By removing obsolete data

By modifying data

By retrieving data

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12. What is the role of error handling mechanisms when working with data modification statements?

Dealing with unexpected issues

Data validation

Creating backups

Wrapping transactions

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13. In MySQL, what should you consider when using data modification statements on tables with indexes?

Use of subqueries

Efficient use of indexes

Avoid indexes

Data retrieval performance

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14. Which MySQL statement allows you to add new records to a table based on the result of a subquery?

UPDATE

DELETE

SELECT

INSERT…SELECT

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15. What is the primary benefit of creating regular backups when using data modification statements?

Protection against data loss

Improved data analysis

Easier data insertion

Faster data retrieval

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16. What is the purpose of using the principle of least privilege when granting permissions for data modification statements?

Increasing performance

Simplifying data retrieval

Enhancing security

Enforcing data validation

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17. Which data modification statement in MySQL can be used to track changes made to a database?

DELETE

LOG

UPDATE

INSERT

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18. How can data modification statements be used in batch processing?

For random data generation

For data retrieval

To update multiple records

To modify database schema

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19. What is the role of the BEGIN, COMMIT, and ROLLBACK statements in transaction management?

Error handling

Index optimization

Ensuring data consistency

Data validation

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20. What does the INSERT…SELECT statement in MySQL allow you to do?

Add new columns

Modify existing data

Insert data from one table

Create backups

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21. What is the primary purpose of the DELETE statement in MySQL?

Retrieve data

Add new data

Modify data

Remove data from a table

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22. How can you ensure that users have the appropriate permissions to execute data modification statements?

Apply the principle of least privilege

Use data encryption

Use data modification statements

Data validation

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23. What is the primary use of data modification statements in batch processing?

For data retrieval

For data insertion

For updating data

For data analysis

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24. When should you apply data modification statements to a database?

During error handling

Before creating a backup

As needed

During transaction management

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