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

CURRENT_TIME

GETDATE()

CURRENT_TIMESTAMP

NOW()

None

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

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

Disable the `event_scheduler` global variable

Store the event name in a separate table

Use `ENABLE EVENT` after creation

None

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

How do you disable an event without deleting it?

DELETE EVENT event_name;

ALTER EVENT event_name DISABLE;

REMOVE EVENT event_name;

DROP EVENT event_name;

None

Which SQL statement is used to create a MySQL event?

CREATE EVENT

INSERT EVENT

NEW EVENT

SCHEDULE EVENT

None

How do you modify an existing event in MySQL?

UPDATE EVENT event_name

MODIFY EVENT event_name

ALTER EVENT event_name

CHANGE EVENT event_name

None

Which MySQL privilege is required to create events?

TRIGGER

EVENT

SCHEDULE

SUPER

None

Which global variable controls the execution of MySQL events?

schedule_event

mysql_event

event_handler

event_scheduler

None

What happens when the MySQL event scheduler is turned off?

Scheduled events will not execute

Events will run once and then stop

All events will be deleted

Events will execute but not update data

None

10.

Which command is used to remove a scheduled event permanently?

REMOVE EVENT event_name;

DISABLE EVENT event_name;

DROP EVENT event_name;

DELETE EVENT event_name;

None

11.

Which command retrieves the full definition of an event?

SHOW EVENT event_name;

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

SHOW CREATE EVENT event_name;

DESCRIBE EVENT event_name;

None

12.

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

ENABLE EVENT SCHEDULER;

START EVENT SCHEDULER;

ALTER DATABASE ENABLE EVENT;

SET GLOBAL event_scheduler = ON;

None

13.

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

CREATE EVENT task_name RUN EVERY 1 DAY DO sql_statement;

CREATE RECURRING EVENT task_name DO sql_statement;

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

CREATE EVENT task_name ON SCHEDULE EVERY 1 DAY DO sql_statement;

None

14.

Which statement retrieves a list of all scheduled events?

SELECT * FROM mysql.events;

DESCRIBE EVENTS;

LIST EVENTS;

SHOW EVENTS;

None

15.

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

LIMIT

ENDS

STOP AT

UNTIL

None

16.

What is the default execution frequency for MySQL events?

Once per day

Once per hour

Once per week

They do not repeat unless explicitly specified

None

17.

How do MySQL events differ from triggers?

Triggers run at scheduled intervals, while events run immediately

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

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

Events can only be executed manually, while triggers execute automatically

None

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