• Placement 360 CourseExplore
  • MySQL Quiz

    Last Updated :
    Discuss
    Comments

    Question 1

    Which organization develops and maintains MySQL?

    • A

      Microsoft Corporation

    • B

      Oracle Corporation

    • C

      Google LLC

    • D

      IBM Corporation

    Question 2

    Which command is used in the MySQL command line client to list all existing databases?

    • A

      LIST DATABASE command in MySQL

    • B

      SHOW DATABASES command in MySQL

    • C

      VIEW DATABASE command in MySQL

    • D

      DISPLAY DATABASE command in MySQL

    Question 3

    Which statement correctly compares DESCRIBE and SHOW COLUMNS in MySQL?
    • A
      SHOW COLUMNS returns privileges while DESCRIBE shows users
    • B
      DESCRIBE deletes metadata while SHOW COLUMNS restores it
    • C
      Both return similar structure details with different formats
    • D
      DESCRIBE returns data while SHOW COLUMNS modifies data

    Question 4

    What happens to the data in a table when it is renamed using RENAME TABLE?
    • A
      The data is deleted during renaming process
    • B
      The data structure is reset after renaming
    • C
      The existing data remains unchanged after renaming
    • D
      The data is duplicated into a new table

    Question 5

    What is the effect of using CREATE TEMPORARY TABLE ... LIKE existing_table?
    • A
      Copies table structure without copying data
    • B
      Copies both structure and all existing data
    • C
      Copies only indexes from the table
    • D
      Creates an empty table with no structure

    Question 6

    Which data type is most suitable for storing variable-length character data such as names or emails?

    • A

      TINYTEXT for very short text

    • B

      CHAR for fixed-length text storage

    • C

      TEXT for large text storage

    • D

      VARCHAR for variable-length text storage

    Question 7

    What is the primary purpose of MySQL data types in table columns?

    • A

      Manage relationships between multiple tables

    • B

      Control user access permissions in database

    • C

      Ensure valid data storage with defined structure

    • D

      Automatically generate column values

    Question 8

    Which ALTER TABLE operation is used to change the data type of an existing column?

    • A

      DROP COLUMN to remove existing column

    • B

      ADD COLUMN to insert new column

    • C

      MODIFY COLUMN to update column definition

    • D

      CHANGE COLUMN to rename table

    Question 9

    Why is SHOW DATABASES preferred over querying system tables directly?

    • A

      Improves query execution performance automatically

    • B

      Creates indexes for faster database retrieval

    • C

      Prevents access to system-level database records

    • D

      Simplifies database listing without complex queries

    Question 10

    Which step is used to verify that a database has been deleted?

    • A

      Running SHOW DATABASES to check database list

    • B

      Running SELECT query on deleted database

    • C

      Running UPDATE query on database table

    • D

      Running DESCRIBE command on database

    Tags:

    There are 15 questions to complete.

    Take a part in the ongoing discussion