d427 Data Management Applications - Set 1 - Part 1

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

Question 1: What SQL statement is used to retrieve all columns from a table named "Employees"?

GET *

SELECT ALL FROM Employees

SELECT * FROM Employees

FETCH * FROM Employees

Question 2: Which SQL statement is used to insert a new row into a table named "Orders"?

INSERT INTO Orders

ADD NEW Orders

INSERT Orders INTO

ADD ROW INTO Orders

Question 3: What SQL function is used to count the number of rows in a table?

TOTAL()

COUNT(*)

NUMBER()

SUM()

Question 4: Which SQL clause is used to filter records in a SELECT statement?

FILTER

LIMIT

WHERE

CONSTRAIN

Question 5: Which SQL operator is used to combine two or more conditions?

AND

BOTH

COMBINE

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

Counts duplicate values

Selects unique values

Sorts the data

Deletes duplicates

Question 7: Which SQL clause is used to group rows that have the same values into summary rows?

GROUP BY

SUMMARIZE

ORDER BY

FILTER BY

Question 8: Which SQL statement is used to remove rows from a table?

REMOVE

DELETE

DROP

ERASE

Question 9: Which SQL statement is used to modify existing data in a table?

ALTER

MODIFY

UPDATE

CHANGE

Question 10: What keyword is used in SQL to sort the result-set of a query?

ARRANGE

ORDER BY

SORT BY

ALIGN

Question 11: How do you select all records where the column "City" has the value 'Berlin'?

SELECT * FROM Customers WHERE City = 'Berlin'

SELECT * FROM Customers WHEN City = 'Berlin'

SELECT * FROM Customers FIND City = 'Berlin'

SELECT * FROM Customers HAVING City = 'Berlin'

Question 12: Which SQL keyword is used to remove a table from a database?

DELETE TABLE

REMOVE TABLE

DROP TABLE

CLEAR TABLE

Question 13: Which function is used to find the largest value in a column?

BIG()

MAX()

LARGE()

GREATEST()

Question 14: Which function is used to find the smallest value in a column?

SMALL()

MIN()

LEAST()

LOWER()

Question 15: What does the SQL clause LIMIT do?

Limits the length of a string

Limits the number of returned rows

Limits the size of a column

Limits the number of columns

Question 16: What SQL statement is used to create a new table?

MAKE TABLE

CREATE TABLE

NEW TABLE

INITIATE TABLE

Question 17: How do you retrieve only unique values from a column?

SELECT UNIQUE

SELECT DISTINCT

SELECT DIFFERENT

SELECT ONLY

Question 18: Which SQL clause is used to filter groups of rows?

GROUP BY

HAVING

WHERE

ORDER BY

Question 19: What is the function of the SQL operator IN?

Checks if a value matches any value in a list

Checks if a value is greater than a list

Checks if a value is not in a list

Checks if a value contains a list

Question 20: What does the SQL statement ALTER TABLE do?

Removes a column from a table

Changes the structure of a table

Changes the data in a table

Deletes the table

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