MySQL - INSERT, UPDATE and DELETE Data MCQ

MySQL – INSERT UPDATE and DELETE Data MCQ

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1. What operation is used to add new records to a MySQL table?

INSERT

DELETE

SELECT

ALTER

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2. Which MySQL statement is used to modify existing records in a table?

UPDATE

INSERT INTO

DELETE

ALTER TABLE

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3. What is the primary purpose of the INSERT statement in MySQL?

To delete records

To add new records

To retrieve data

To update records

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4. When performing an INSERT operation, what must be specified for each column in the target table?

A value to populate the column

The maximum value

A value that violates constraints

A random value

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5. What is the primary function of the UPDATE statement in MySQL?

To retrieve data

To modify existing records

To add new records

To delete records

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6. Which clause is used to identify the rows to be updated when using the UPDATE statement?

WHERE

FROM

SET

INTO

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7. What operation is used to remove records from a MySQL table based on specified conditions?

DELETE

INSERT INTO

ALTER TABLE

UPDATE

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8. In a DELETE statement, which clause specifies the conditions for removing records?

FROM

WHERE

SET

INTO

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9. What is the primary concern when performing DELETE operations in MySQL?

Data uniqueness

Data retrieval speed

Data modification

Data consistency

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10. What happens if you execute a DELETE statement without a WHERE clause in MySQL?

All records in the table are deleted

An error is generated

The database is locked

The table structure is altered

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11. What is the primary purpose of using transactions when performing data manipulation operations?

To enforce data constraints

To ensure data consistency

To create database backups

To speed up data retrieval

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12. Which type of index can slow down data manipulation operations if used excessively?

Non-null index

Composite index

Unique index

Foreign key index

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13. When inserting multiple rows in a single INSERT statement, what is the advantage?

It minimizes database interaction overhead

It reduces database storage

It improves data retrieval speed

It enforces data constraints

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14. What should you consider before using the DELETE operation in MySQL?

The impact on data retrieval speed

The impact on data integrity

The impact on data storage

The impact on data uniqueness

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15. What happens when you insert data into a table with an auto-incrementing primary key?

The primary key becomes the foreign key

You must specify a value for the primary key

The primary key is automatically generated

The table is locked during the insert operation

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16. In the context of INSERT operations, what is data validation primarily concerned with?

Data storage optimization

Data retrieval speed

Data consistency

Data uniqueness and constraints

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17. What is the purpose of using the WHERE clause in an UPDATE statement?

To specify which rows to update

To specify which columns to update

To define the order of updates

To perform multiple updates in a single query

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18. How can you reduce the performance impact of excessive indexing when inserting data?

Avoid using indexes altogether

Create indexes on all columns

Create indexes only on frequently used columns

Use transactions for data insertion

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19. What is the primary reason for using error handling mechanisms during data manipulation?

To enforce data constraints

To reduce data storage requirements

To gracefully handle exceptions during operations

To optimize data retrieval

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20. Which operation should you use to add new records to a MySQL table?

DELETE

UPDATE

SELECT

INSERT INTO

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21. In an UPDATE statement, what clause is used to specify which rows should be updated?

SET

WHERE

FROM

INTO

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22. What is the primary concern when performing INSERT operations in MySQL?

Data retrieval speed

Data modification

Data consistency

Data uniqueness

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23. What does a WHERE clause in a DELETE statement specify in MySQL?

Which columns to delete

Which rows to delete

Which rows to insert

Which columns to update

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24. What is the main advantage of using transactions during data manipulation in MySQL?

Enhanced data uniqueness

Reduced data storage requirements

Data consistency and integrity

Improved data retrieval speed

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25. Which type of query is optimized by using indexes in MySQL?

INSERT queries

SELECT queries

DELETE queries

UPDATE queries

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26. What should be considered when defining indexes in MySQL tables to avoid performance issues?

Creating indexes on all columns

Indexing only columns with unique values

Indexing frequently used columns

Using transactions for data manipulation

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MySQL – INSERT, UPDATE and DELETE Data MCQ