D427 Data Management Applications - Set 3 - Part 3

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

Question 41: Which SQL operator is used to match any value in a specified list?

ANY

EXISTS

Question 42: Which SQL function is used to return the smallest integer greater than or equal to a given number?

CEILING()

FLOOR()

ROUND()

ABS()

Question 43: What is the result of the following expression: SELECT 10 / 3?

3.33

3.5

Question 44: How do you change the data type of an existing column in SQL?

ALTER COLUMN MODIFY TYPE

ALTER TABLE MODIFY COLUMN

CHANGE COLUMN TYPE

MODIFY COLUMN TYPE

Question 45: What does the SQL keyword DISTINCT do?

Removes duplicates from the result set

Limits the number of rows returned

Sorts rows in ascending order

Filters rows based on a condition

Question 46: Which SQL function is used to convert a string to lowercase?

LOWER()

TOLOWER()

MINUSCULE()

SMALLCASE()

Question 47: Which SQL keyword is used to specify a condition for joining two tables?

WHERE

JOIN

USING

Question 48: How do you retrieve all rows where a column value is NULL in SQL?

WHERE column IS NULL

WHERE column = NULL

WHERE column == NULL

WHERE column IS EMPTY

Question 49: Which SQL function is used to return the current system date and time?

NOW()

TODAY()

CURRENT_TIME()

GETDATE()

Question 50: How do you remove a table from a database in SQL?

DELETE TABLE

DROP TABLE

REMOVE TABLE

ERASE TABLE

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