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

STOP AT

LIMIT

ENDS

UNTIL

None

Which global variable controls the execution of MySQL events?

mysql_event

event_scheduler

event_handler

schedule_event

None

Which MySQL privilege is required to create events?

SUPER

TRIGGER

EVENT

SCHEDULE

None

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

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

CURRENT_TIME

GETDATE()

CURRENT_TIMESTAMP

NOW()

None

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

ENABLE EVENT SCHEDULER;

ALTER DATABASE ENABLE EVENT;

START EVENT SCHEDULER;

SET GLOBAL event_scheduler = ON;

None

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

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

Disable the `event_scheduler` global variable

Use `ENABLE EVENT` after creation

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

Store the event name in a separate table

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

10.

Which command retrieves the full definition of an event?

SHOW CREATE EVENT event_name;

SHOW EVENT event_name;

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

DESCRIBE EVENT event_name;

None

11.

How do you disable an event without deleting it?

DROP EVENT event_name;

ALTER EVENT event_name DISABLE;

REMOVE EVENT event_name;

DELETE EVENT event_name;

None

12.

Which SQL statement is used to create a MySQL event?

CREATE EVENT

SCHEDULE EVENT

INSERT EVENT

NEW EVENT

None

13.

Which statement retrieves a list of all scheduled events?

DESCRIBE EVENTS;

SELECT * FROM mysql.events;

SHOW EVENTS;

LIST EVENTS;

None

14.

How do you modify an existing event in MySQL?

CHANGE EVENT event_name

MODIFY EVENT event_name

ALTER EVENT event_name

UPDATE EVENT event_name

None

15.

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

16.

What happens when the MySQL event scheduler is turned off?

All events will be deleted

Events will execute but not update data

Scheduled events will not execute

Events will run once and then stop

None

17.

How do MySQL events differ from triggers?

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

Events can only be executed manually, while triggers execute automatically

Triggers run at scheduled intervals, while events run immediately

None

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