How to create and execute MySQL stored procedures and triggers.

To write and execute MySQL stored procedures and triggers, you can do it through the MySQL client or by using a SQL script. Here is a detailed guide:

1. Create a stored procedure:

DELIMITER //
CREATE PROCEDURE my_procedure()
BEGIN
    SELECT * FROM my_table;
END //
DELIMITER ;

1. Execute stored procedure:

CALL my_procedure();

1. Create a trigger:

CREATE TRIGGER my_trigger
AFTER INSERT ON my_table
FOR EACH ROW
BEGIN
    INSERT INTO log_table (message) VALUES ('A new record has been inserted');
END;

1. Trigger Execution: Triggers do not need to be manually executed; they will automatically execute when the trigger conditions are met.

By following the steps above, you can write and execute MySQL stored procedures and triggers. If you are using the MySQL client, you can directly execute the SQL statements on the client. If you are using an SQL script, you can save the SQL statements in a .sql file and then execute the script file through the MySQL client.