D426 Data Management Foundations - Set 4 - Part 2

Test your knowledge of technical writing concepts with these practice questions. Each question includes detailed explanations to help you understand the correct answers.

Question 21: Which SQL statement is used to create a new view based on a SELECT query?

CREATE VIEW

NEW VIEW

ADD VIEW

DEFINE VIEW

Question 22: Which SQL operator is used to test for a NULL value?

IS NULL

NULL TEST

IS EMPTY

NOT NULL

Question 23: What does the term 'join' refer to in SQL?

Combining data from two or more tables

Removing duplicates from a table

Sorting records in a table

Creating a new database

Question 24: Which SQL function is used to return the length of a string?

LENGTH()

SIZE()

COUNT()

CHAR_LENGTH()

Question 25: Which SQL clause is used to specify the number of rows to be returned?

LIMIT

TOP

RANK

COUNT

Question 26: Which SQL statement is used to create a new database?

NEW DATABASE

CREATE DATABASE

ADD DATABASE

DEFINE DATABASE

Question 27: Which SQL keyword is used to specify an alternative value if a NULL value is encountered?

IFNULL

COALESCE

NULLIF

DEFAULT

Question 28: What does the term 'schema' refer to in a database?

The physical storage of data

The overall structure of the database

The data types of columns

The user privileges

Question 29: Which SQL command is used to grant a user read-only access to a table?

GRANT SELECT

GRANT READ

GRANT ALL

GRANT WRITE

Question 30: Which SQL keyword is used to specify the data type of a column in a table?

TYPE

DATA TYPE

COLUMN TYPE

DATA

Question 31: Which SQL command is used to create a new table with specified columns and data types?

CREATE TABLE

ADD TABLE

NEW TABLE

DEFINE TABLE

Question 32: Which SQL statement is used to modify the values of a specific column in existing records?

UPDATE

CHANGE

MODIFY

ALTER

Question 33: Which SQL function is used to remove leading and trailing spaces from a string?

TRIM()

CLEAN()

STRIP()

REMOVE()

Question 34: What is the purpose of the HAVING clause in SQL?

To filter records before grouping

To sort the result set

To filter records after grouping

To join multiple tables

Question 35: Which SQL statement is used to remove a row from a table?

DROP

REMOVE

DELETE

TRUNCATE

Question 36: What does the SQL function LCASE() do?

Converts a string to uppercase

Removes spaces from a string

Converts a string to lowercase

Counts characters in a string

Question 37: Which SQL operator is used to compare two values for equality?

Question 38: Which SQL command is used to remove a column from a table?

DROP COLUMN

REMOVE COLUMN

DELETE COLUMN

ALTER COLUMN

Question 39: What is the purpose of a data dictionary in a database?

To store user data

To define user permissions

To describe database structure and objects

To keep track of transactions

Question 40: Which SQL command is used to create a new user in the database?

CREATE USER

ADD USER

NEW USER

DEFINE USER

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