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.

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

START EVENT SCHEDULER;

ENABLE EVENT SCHEDULER;

SET GLOBAL event_scheduler = ON;

ALTER DATABASE ENABLE EVENT;

None

How do MySQL events differ from triggers?

Events can only be executed manually, while triggers execute automatically

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

Triggers run at scheduled intervals, while events run immediately

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

None

Which statement retrieves a list of all scheduled events?

LIST EVENTS;

SELECT * FROM mysql.events;

DESCRIBE EVENTS;

SHOW EVENTS;

None

What is the default execution frequency for MySQL events?

Once per week

Once per day

Once per hour

They do not repeat unless explicitly specified

None

How do you disable an event without deleting it?

DELETE EVENT event_name;

REMOVE EVENT event_name;

DROP EVENT event_name;

ALTER EVENT event_name DISABLE;

None

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

CREATE EVENT task_name RUN EVERY 1 DAY DO sql_statement;

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

CREATE RECURRING EVENT task_name DO sql_statement;

CREATE EVENT task_name ON SCHEDULE EVERY 1 DAY DO sql_statement;

None

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

GETDATE()

NOW()

CURRENT_TIMESTAMP

CURRENT_TIME

None

Which global variable controls the execution of MySQL events?

schedule_event

event_handler

mysql_event

event_scheduler

None

Which MySQL privilege is required to create events?

TRIGGER

SCHEDULE

EVENT

SUPER

None

10.

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

UNTIL

LIMIT

STOP AT

ENDS

None

11.

Which SQL statement is used to create a MySQL event?

NEW EVENT

CREATE EVENT

SCHEDULE EVENT

INSERT EVENT

None

12.

What is the primary purpose of MySQL events?

To monitor and log database queries

To execute SQL statements at specified times or intervals

To enforce data integrity in MySQL tables

To execute code automatically in response to table modifications

None

13.

What happens when the MySQL event scheduler is turned off?

Scheduled events will not execute

Events will run once and then stop

Events will execute but not update data

All events will be deleted

None

14.

Which command is used to remove a scheduled event permanently?

DELETE EVENT event_name;

DISABLE EVENT event_name;

REMOVE EVENT event_name;

DROP EVENT event_name;

None

15.

How do you modify an existing event in MySQL?

UPDATE EVENT event_name

CHANGE EVENT event_name

ALTER EVENT event_name

MODIFY EVENT event_name

None

16.

Which command retrieves the full definition of an event?

SHOW CREATE EVENT event_name;

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

DESCRIBE EVENT event_name;

SHOW EVENT event_name;

None

17.

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

Use `ENABLE EVENT` after creation

Store the event name in a separate table

None

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