MySQL Quiz for Class XII

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Test your MySQL basics

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Lalita Bhardwaj

India

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MySQL Quiz for Class XII


MySQL Quiz for Class XIIVersion en ligne Test your MySQL basics par Lalita Bhardwaj 1 Which clause is used to filter rows in a SELECT query? a GROUP BY b ORDER BY c HAVING d WHERE 2 Which keyword creates an auto-incrementing primary key? a AUTO_INCREMENT b INDEX c INCREMENT d SERIAL 3 Which join returns rows when there is a match in both tables? a INNER JOIN b CROSS JOIN c RIGHT JOIN d LEFT JOIN 4 Which statement is used to add a new table? a CREATE TABLE b MAKE TABLE c NEW TABLE d ADD TABLE 5 Which data type stores date values? a BOOLEAN b DATE c INT d VARCHAR 6 What does PRIMARY KEY constraint enforce? a Null values allowed b Unknown values only c Uniqueness (and not null) d Indexing only 7 Which statement is used to remove a table? a REMOVE b DROP TABLE c ERASE TABLE d DELETE TABLE 8 Which operator pattern matches any string of characters in MySQL? a MATCH b REGEXP c CONTAINS d LIKE 9 What does an index in MySQL improve? a Disk space usage b Row-level locking c Data integrity d Query performance 10 Which constraint enforces a value must exist in another table? a CHECK b PRIMARY KEY c FOREIGN KEY d UNIQUE Feedback 1 The WHERE clause specifies which rows to retrieve based on a condition. 2 AUTO_INCREMENT automatically increases the key value for each new row. 3 INNER JOIN returns only matching rows from both tables. 4 CREATE TABLE defines a new table and its structure. 5 DATE stores calendar date values (YYYY-MM-DD). 6 PRIMARY KEY enforces unique values and typically NOT NULL for the key column. 7 DROP TABLE permanently deletes the table and its data. 8 LIKE uses % as a wildcard to match multiple characters. 9 Indexes speed up data retrieval by reducing the amount of data scanned. 10 FOREIGN KEY ensures referential integrity with related tables.

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MySQL Quiz for Class XII

Test

À propos de cette activité

Créé par

Téléchargez la version pour jouer sur papier

Top Jeux

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MySQL Quiz for Class XIIVersion en ligne

par Lalita Bhardwaj

Which clause is used to filter rows in a SELECT query?

Which keyword creates an auto-incrementing primary key?

Which join returns rows when there is a match in both tables?

Which statement is used to add a new table?

Which data type stores date values?

What does PRIMARY KEY constraint enforce?

Which statement is used to remove a table?

Which operator pattern matches any string of characters in MySQL?

What does an index in MySQL improve?

Which constraint enforces a value must exist in another table?

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