Most Asked SQL MCQs with Answers for Exams: This blog post provides a comprehensive collection of the most frequently asked SQL multiple-choice questions, complete with answers. Perfect for exam preparation, these MCQs will help you master key SQL concepts and boost your chances of success. Whether you're a beginner or looking to refine your skills, this guide is an essential resource for acing your exams.
Q1. What does SQL stand for?
a) Structured Query Language
b) System Query Language
c) Sequential Query Language
d) Standardized Query Logic
a) Structured Query Language
a) SELECT, UPDATE, DELETE, INSERT
b) RETRIEVE, MODIFY, REMOVE, ADD
c) READ, ALTER, DROP, CREATE
d) FETCH, CHANGE, ERASE, APPEND
a) SELECT, UPDATE, DELETE, INSERT
a) FROM
b) WHERE
c) HAVING
d) GROUP BY
b) WHERE
a) It specifies which tables to query.
b) It sorts the results of a query.
c) It filters records based on a condition.
d) It groups records based on a column.
c) It filters records based on a condition.
a) SELECT *
b) SELECT ALL
c) RETRIEVE ALL
d) FETCH *
a) SELECT *
a) SORT
b) ORDER BY
c) ASC
d) DESC
b) ORDER BY
a) It limits the number of tables in a query.
b) It limits the number of columns to display.
c) It limits the number of rows in the result set.
d) It limits the depth of nested queries.
c) It limits the number of rows in the result set.
a) ALTER
b) MODIFY
c) UPDATE
d) CHANGE
c) UPDATE
a) It creates a new table.
b) It inserts a new column into an existing table.
c) It inserts new data into a table.
d) It updates existing data in a table.
c) It inserts new data into a table.
a) REMOVE
b) DELETE
c) ERASE
d) DROP
b) DELETE
a) A value of zero
b) An empty string
c) A missing or unknown value
d) A placeholder for a future value
c) A missing or unknown value
a) COUNT()
b) SUM()
c) AVG()
d) TOTAL()
a) COUNT()
a) It groups rows based on a condition.
b) It groups columns for better organization.
c) It combines multiple tables into one.
d) It groups rows based on a column's values.
d) It groups rows based on a column's values.
a) UNIQUE
b) DISTINCT
c) DIFFERENT
d) INDIVIDUAL
b) DISTINCT
a) It filters records before they are grouped.
b) It specifies the order of grouped results.
c) It filters grouped records based on conditions.
d) It calculates aggregate functions on grouped data.
c) It filters grouped records based on conditions.
a) CONNECT
b) COMBINE
c) JOIN
d) MERGE
c) JOIN
a) It specifies which columns to include in the result set.
b) It determines the order of joined tables.
c) It defines the condition for joining tables.
d) It groups results based on a column.
c) It defines the condition for joining tables.
a) DROP TABLE
b) REMOVE TABLE
c) DELETE TABLE
d) ERASE TABLE
a) DROP TABLE
a) It modifies existing rows in a table.
b) It adds new columns to a table.
c) It changes the order of columns in a table.
d) It deletes records from a table.
b) It adds new columns to a table.
a) ALTER
b) RENAME
c) CHANGE
d) MODIFY
b) RENAME
a) INSERT INTO
b) ADD INTO
c) CREATE INTO
d) APPEND INTO
a) INSERT INTO
a) It calculates the total sum of a column.
b) It counts the number of rows in a result set.
c) It calculates the average value of a column.
d) It retrieves the highest value in a column.
c) It calculates the average value of a column.
a) MERGE
b) UNION
c) CONNECT
d) COMBINE
b) UNION
a) It specifies the number of rows to display.
b) It sorts the rows in descending order.
c) It removes duplicate rows from the result set.
d) It groups rows based on a column's values.
c) It removes duplicate rows from the result set.
a) TRUNCATE TABLE
b) DELETE ALL
c) REMOVE ALL
d) ERASE TABLE
a) TRUNCATE TABLE
a) It calculates the total number of rows in a result set.
b) It computes the average of a column's values.
c) It determines the maximum value in a column.
d) It adds up the values in a column.
a) It calculates the total number of rows in a result set.
a) MODIFY
b) SET
c) UPDATE
d) CHANGE
c) UPDATE
a) It arranges columns in a table.
b) It filters rows based on a condition.
c) It combines multiple tables into one.
d) It groups rows for aggregate calculations.
d) It groups rows for aggregate calculations.
a) MAX()
b) HIGH()
c) TOP()
d) HIGHEST()
a) MAX()
a) It groups rows based on a column.
b) It specifies the number of rows to display.
c) It sorts the result set based on column values.
d) It filters rows based on a condition.
c) It sorts the result set based on column values.
a) ADD TABLE
b) CREATE TABLE
c) INSERT TABLE
d) NEW TABLE
b) CREATE TABLE
a) It checks if a value is equal to another value.
b) It checks if a value is greater than another value.
c) It checks if a value is within a range of values.
d) It checks if a value is null or not.
c) It checks if a value is within a range of values.
a) ALTER TABLE
b) CHANGE TABLE
c) MODIFY TABLE
d) UPDATE TABLE
a) ALTER TABLE
a) The process of backing up data regularly.
b) The accuracy, reliability, and consistency of data.
c) The encryption of sensitive data.
d) The process of merging data from multiple sources.
b) The accuracy, reliability, and consistency of data.
a) REMOVE COLUMN
b) DELETE COLUMN
c) DROP COLUMN
d) ERASE COLUMN
c) DROP COLUMN
a) It counts the total number of distinct values in a column.
b) It counts the total number of rows in a result set.
c) It calculates the average of distinct values in a column.
d) It counts the total number of columns in a table.
a) It counts the total number of distinct values in a column.
a) UPPER()
b) CONVERT()
c) CAPS()
d) UPPERCASE()
a) UPPER()
a) It checks if a value is null.
b) It checks if a value is not equal to another value.
c) It checks if a value is similar to a specified pattern.
d) It checks if a value is within a range of values.
c) It checks if a value is similar to a specified pattern.
a) MODIFY
b) ALTER
c) CHANGE
d) UPDATE
d) UPDATE
a) It calculates the average of a column.
b) It combines multiple columns into one column.
c) It concatenates values from multiple rows into one string.
d) It groups rows based on a column's values.
c) It concatenates values from multiple rows into one string.
Congratulations on completing our Basic SQL Concepts MCQ Test! Whether you're a seasoned pro or just starting, mastering these fundamentals is key to effective database management. Keep honing your skills and exploring advanced applications of SQL to unlock its full potential. Happy querying!