Execute the examples given in photo and write an explanation of the workarounds of these queries in your own words.

Example 1: CREATE TABLE salaries ( id INT PRIMARY KEY, valid_from DATE NOT NULL, amount DECIMAL (12 , 2 ) NOT NULL DEFAULT O ); INSERT INTO salaries (id, valid_from, amount) VALUES (1002, '2000-01-01',50000), (1056, '2000-01-01', 60000), (1076, '2000-01-01', 70000); CREATE TABLE salary_archives id INT PRIMARY KEY AUTO_INCREMENT, employee_id INT, valid_from DATE NOT NULL, amount DECIMAL (12 , 2) NOT NULL DEFAULT O, deleted_at TIMESTAMP DEFAULT NOW() DELIMITER $$ CREATE TRIGGER before_salaries_delete BEFORE DELETE ON salaries FOR EACH ROW BEGIN INSERT INTO salary_archives (employee_id, valid_from, amount) VALUES (OLD.id, OLD.valid_from, OLD.amount); END$$ DELIMITER; DELETE FROM salaries WHERE ID = 1002