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 primary purpose of MySQL events?

To monitor and log database queries

To execute code automatically in response to table modifications

To execute SQL statements at specified times or intervals

To enforce data integrity in MySQL tables

None

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

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

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

Disable the `event_scheduler` global variable

Store the event name in a separate table

None

Which global variable controls the execution of MySQL events?

event_handler

schedule_event

mysql_event

event_scheduler

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

Which statement retrieves a list of all scheduled events?

LIST EVENTS;

DESCRIBE EVENTS;

SHOW EVENTS;

SELECT * FROM mysql.events;

None

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

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

Triggers run at scheduled intervals, while events run immediately

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

None

What is the default execution frequency for MySQL events?

They do not repeat unless explicitly specified

Once per day

Once per week

Once per hour

None

10.

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

11.

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

GETDATE()

CURRENT_TIME

NOW()

CURRENT_TIMESTAMP

None

12.

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

LIMIT

STOP AT

UNTIL

ENDS

None

13.

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

14.

Which SQL statement is used to create a MySQL event?

NEW EVENT

CREATE EVENT

INSERT EVENT

SCHEDULE EVENT

None

15.

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

SET GLOBAL event_scheduler = ON;

ENABLE EVENT SCHEDULER;

ALTER DATABASE ENABLE EVENT;

START EVENT SCHEDULER;

None

16.

How do you modify an existing event in MySQL?

ALTER EVENT event_name

CHANGE EVENT event_name

UPDATE EVENT event_name

MODIFY EVENT event_name

None

17.

Which MySQL privilege is required to create events?

TRIGGER

EVENT

SUPER

SCHEDULE

None

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