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?

INSERT EVENT

CREATE EVENT

SCHEDULE EVENT

NEW EVENT

None

How do MySQL events differ from triggers?

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

Triggers run at scheduled intervals, while events run immediately

Events can only be executed manually, while triggers execute automatically

None

Which statement retrieves a list of all scheduled events?

LIST EVENTS;

SELECT * FROM mysql.events;

SHOW EVENTS;

DESCRIBE EVENTS;

None

What is the primary purpose of MySQL events?

To monitor and log database queries

To enforce data integrity in MySQL tables

To execute code automatically in response to table modifications

To execute SQL statements at specified times or intervals

None

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

Use `ENABLE EVENT` after creation

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

Store the event name in a separate table

Disable the `event_scheduler` global variable

None

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

CREATE EVENT task_name ON SCHEDULE EVERY 1 DAY DO sql_statement;

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;

None

What is the default execution frequency for MySQL events?

Once per day

Once per week

Once per hour

They do not repeat unless explicitly specified

None

Which command is used to remove a scheduled event permanently?

DISABLE EVENT event_name;

REMOVE EVENT event_name;

DELETE EVENT event_name;

DROP EVENT event_name;

None

How do you disable an event without deleting it?

ALTER EVENT event_name DISABLE;

DELETE EVENT event_name;

REMOVE EVENT event_name;

DROP EVENT event_name;

None

10.

Which global variable controls the execution of MySQL events?

event_handler

mysql_event

schedule_event

event_scheduler

None

11.

Which command retrieves the full definition of an event?

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

SHOW EVENT event_name;

DESCRIBE EVENT event_name;

SHOW CREATE EVENT event_name;

None

12.

How do you modify an existing event in MySQL?

MODIFY EVENT event_name

UPDATE EVENT event_name

ALTER EVENT event_name

CHANGE EVENT event_name

None

13.

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

CURRENT_TIMESTAMP

CURRENT_TIME

NOW()

GETDATE()

None

14.

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

ENABLE EVENT SCHEDULER;

SET GLOBAL event_scheduler = ON;

START EVENT SCHEDULER;

ALTER DATABASE ENABLE EVENT;

None

15.

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

ENDS

STOP AT

LIMIT

UNTIL

None

16.

What happens when the MySQL event scheduler is turned off?

Events will execute but not update data

Scheduled events will not execute

Events will run once and then stop

All events will be deleted

None

17.

Which MySQL privilege is required to create events?

SUPER

EVENT

TRIGGER

SCHEDULE

None

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