MySQL Events Quiz – Answertopia

This quiz will test your understanding of MySQL Events, including how to create, modify, and manage scheduled tasks using SQL commands. Answer the following questions to see how well you understand MySQL Events and their applications.

Which SQL statement is used to create a MySQL event?

CREATE EVENT

NEW EVENT

SCHEDULE EVENT

INSERT EVENT

None

Which command retrieves the full definition of an event?

SHOW EVENT event_name;

SHOW CREATE EVENT event_name;

DESCRIBE EVENT event_name;

SELECT * FROM information_schema.events WHERE event_name = ‘event_name’;

None

What is the correct syntax to enable the MySQL event scheduler?

SET GLOBAL event_scheduler = ON;

START EVENT SCHEDULER;

ENABLE EVENT SCHEDULER;

ALTER DATABASE ENABLE EVENT;

None

Which MySQL privilege is required to create events?

SUPER

SCHEDULE

TRIGGER

EVENT

None

What is the default execution frequency for MySQL events?

They do not repeat unless explicitly specified

Once per day

Once per hour

Once per week

None

Which global variable controls the execution of MySQL events?

mysql_event

event_handler

schedule_event

event_scheduler

None

Which command is used to remove a scheduled event permanently?

DISABLE EVENT event_name;

DELETE EVENT event_name;

REMOVE EVENT event_name;

DROP EVENT event_name;

None

Which MySQL clause is used to specify an end time for a recurring event?

ENDS

STOP AT

LIMIT

UNTIL

None

What happens when the MySQL event scheduler is turned off?

Events will execute but not update data

Events will run once and then stop

All events will be deleted

Scheduled events will not execute

None

10.

How do you disable an event without deleting it?

DELETE EVENT event_name;

DROP EVENT event_name;

ALTER EVENT event_name DISABLE;

REMOVE EVENT event_name;

None

11.

What is the primary purpose of MySQL events?

To enforce data integrity in MySQL tables

To execute SQL statements at specified times or intervals

To monitor and log database queries

To execute code automatically in response to table modifications

None

12.

How do you modify an existing event in MySQL?

MODIFY EVENT event_name

CHANGE EVENT event_name

ALTER EVENT event_name

UPDATE EVENT event_name

None

13.

How do MySQL events differ from triggers?

Events can only be executed manually, while triggers execute automatically

Events only apply to a single table, while triggers apply to multiple tables

Events execute based on a time schedule, while triggers execute in response to table events

Triggers run at scheduled intervals, while events run immediately

None

14.

How do you prevent an event from being automatically deleted after execution?

Disable the `event_scheduler` global variable

Use `ON COMPLETION PRESERVE` in the `CREATE EVENT` statement

Use `ENABLE EVENT` after creation

Store the event name in a separate table

None

15.

How do you create a recurring MySQL event that runs every day?

CREATE RECURRING EVENT task_name DO sql_statement;

CREATE EVENT task_name ON SCHEDULE EVERY 1 DAY DO sql_statement;

CREATE EVENT task_name RUN EVERY 1 DAY DO sql_statement;

CREATE EVENT task_name EVERY DAY STARTS NOW() DO sql_statement;

None

16.

Which function can be used to schedule an event relative to the current time?

CURRENT_TIMESTAMP

CURRENT_TIME

GETDATE()

NOW()

None

17.

Which statement retrieves a list of all scheduled events?

LIST EVENTS;

SHOW EVENTS;

DESCRIBE EVENTS;

SELECT * FROM mysql.events;

None

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