Tech+ Data Quiz: Can You Master Records, Fields & Queries?

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2. What is data integrity in database management?

The speed at which queries execute

Ensuring data is accurate, consistent, and valid

The physical location of database files

The number of users accessing the database

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4. Which SQL function counts the number of records in a result set?

SUM()

AVG()

COUNT()

MAX()

5. True or False: A composite key consists of a single column that uniquely identifies records.

True

False

6. What does the DISTINCT keyword do in a SQL query?

Removes duplicate rows from results

Sorts records in descending order

Joins multiple tables

Counts total records

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8. Which statement is used to add new records to a database table?

UPDATE

INSERT

SELECT

DELETE

9. True or False: NULL values in a database represent zero or empty strings.

True

False

10. What is a join in SQL?

Combining rows from two or more tables

Deleting duplicate records

Sorting data in ascending order

Creating a new database

11. What is a field in a database table?

A single row of data

A column that stores one type of attribute

A query result set

A backup copy of the database

12. Which data type is typically used to store text information?

INTEGER

BOOLEAN

VARCHAR

DATE

13. True or False: A query is a request to retrieve, modify, or delete data from a database.

True

False

14. What does normalization accomplish in database design?

Increases query speed

Reduces data redundancy and improves integrity

Encrypts all records

Creates backup copies

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16. Which SQL clause is used to filter records based on specific conditions?

SELECT

WHERE

ORDER BY

GROUP BY

17. True or False: A database field can store multiple different data types simultaneously.

True

False

18. What is the purpose of a foreign key in a relational database?

To sort data alphabetically

To create a relationship between two tables

To delete duplicate records

To encrypt sensitive data

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20. Which of the following best describes a record in a database?

A single value in a cell

A complete row of data with multiple fields

A stored query

A table index

Tech+ Data Quiz: Can You Master Records, Fields & Queries?

1. An index on a database column improves ____ performance.

2.

What first name or nickname would you like us to use?

2. What is data integrity in database management?

3. A ____ constraint ensures that every record has a unique value in a specific field.

4. Which SQL function counts the number of records in a result set?

5. True or False: A composite key consists of a single column that uniquely identifies records.

6. What does the DISTINCT keyword do in a SQL query?

7. A ____ database uses tables with predefined relationships.

8. Which statement is used to add new records to a database table?

9. True or False: NULL values in a database represent zero or empty strings.

10. What is a join in SQL?

11. What is a field in a database table?

12. Which data type is typically used to store text information?

13. True or False: A query is a request to retrieve, modify, or delete data from a database.

14. What does normalization accomplish in database design?

15. A ____ is a structured set of data organized in rows and columns.

16. Which SQL clause is used to filter records based on specific conditions?

17. True or False: A database field can store multiple different data types simultaneously.

18. What is the purpose of a foreign key in a relational database?

19. A primary key uniquely identifies each ____ in a table.

20. Which of the following best describes a record in a database?