consider the database below and answer the query. pk refers to primary key and FK refers to foreign key.    Employee(Employee_id(PK), First_name, Last_name, Email, Phone_number, Hire_Date, Job_ID(FK) COmmision_pct, manager_id, department_id(FK))   Departments(Department_id(PK), dept_name, manager_id(FK), location_id)   Locations(Location_id(PK), street_address,

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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consider the database below and answer the query. pk refers to primary key and FK refers to foreign key. 

 

Employee(Employee_id(PK), First_name, Last_name, Email, Phone_number, Hire_Date, Job_ID(FK) COmmision_pct, manager_id, department_id(FK))

 

Departments(Department_id(PK), dept_name, manager_id(FK), location_id)

 

Locations(Location_id(PK), street_address, postal_code, city, state_province, country_id)

 

Jobs(Job_id(PK), job_title, min_salary, max_salary)

 

write a pl/sql script to create a trigger that prints"the department name is changed from IT to sales" whenever the department is changed from IT to sales

 

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