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SQL and Programming Concepts Worksheet

Authored by Graham Boswell

Computers

10th Grade

Used 10+ times

SQL and Programming Concepts Worksheet
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50 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is a condition in an if statement?

A block of code that is always executed

A variable assignment

A function definition

An expression that evaluates to either True or False

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does NULL represent in SQL?

A default value

Zero

An empty string

The absence of a value or an unknown value

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of the WHERE clause in an SQL query?

To specify the columns to retrieve

To sort the data

To filter data based on specific conditions

To join tables

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the SELECT clause specify in an SQL query?

The fields or expressions to retrieve

The database to connect to

The tables from which data is retrieved

The conditions for data filtering

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main reason for creating relationships between tables in a relational database?

To reduce the number of rows

To organize data efficiently and reduce redundancy

To eliminate the need for primary keys

To avoid NULL values

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the DISTINCT keyword do in an SQL query?

Sorts the results in ascending order

Limits the fields returned

Retrieves only unique values from a specified field or fields

Deletes duplicate rows

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is SQL primarily used for?

Managing and manipulating data in relational databases

Designing web pages

Developing mobile applications

Creating graphics

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