It seems like you're asking for SQL triggers. Here's how you can create them: (a) To create a trigger that verifies that the updated salary of an employee is greater than his/her previous salary, you can use the following SQL code: ```sql CREATE TRIGGER salary_check BEFORE UPDATE ON employees FOR EACH ROW BEGIN IF NEW.salary 5 THEN SIGNAL SQLSTATE '45000' SET MESSAGE_TEXT = 'Error: Number of employees in department 2 should not exceed 5.'; END IF; END; ``` This trigger is activated after an insert on the `employees` table. It checks if the new employee's department is 2 and if the total number of employees in department 2 exceeds 5. If both conditions are met, it raises an error. Please note that the actual syntax might vary depending on the SQL dialect you're using. The above examples are written in MySQL.

Question

It seems like you're asking for SQL triggers. Here's how you can create them:

(a) To create a trigger that verifies that the updated salary of an employee is greater than his/her previous salary, you can use the following SQL code:

```sql
CREATE TRIGGER salary_check BEFORE UPDATE ON employees
FOR EACH ROW
BEGIN
   IF NEW.salary <= OLD.salary THEN
      SIGNAL SQLSTATE '45000'
         SET MESSAGE_TEXT = 'Error: Updated salary must be greater than the previous salary.';
   END IF;
END;
```

This trigger is activated before an update on the `employees` table. It compares the new salary (`NEW.salary`) with the old salary (`OLD.salary`). If the new salary is less than or equal to the old salary, it raises an error.

(b) To create a trigger that verifies that for department 2, the number of employees should not exceed 5, you can use the following SQL code:

```sql
CREATE TRIGGER employee_count_check AFTER INSERT ON employees
FOR EACH ROW
BEGIN
   IF NEW.department_id = 2 AND 
      (SELECT COUNT(*) FROM employees WHERE department_id = 2) > 5 THEN
      SIGNAL SQLSTATE '45000'
         SET MESSAGE_TEXT = 'Error: Number of employees in department 2 should not exceed 5.';
   END IF;
END;
```

This trigger is activated after an insert on the `employees` table. It checks if the new employee's department is 2 and if the total number of employees in department 2 exceeds 5. If both conditions are met, it raises an error.

Please note that the actual syntax might vary depending on the SQL dialect you're using. The above examples are written in MySQL.

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