The Stock of the book needs to be updated correspondingly after a customer has made an order, or a customer has cancelled an order. It can be accomplished by using trigger. You are asked to implement a trigger which needs to take following into consideration: a. The trigger needs to be fired after a new row has been inserted into table Orders, or after a row has been deleted from table Orders which indicates an order has been cancelled b. Each order may contain multiple books in ORDERTITEMS table You also need to write SQL statement or/and PL/SQL code to demonstrate that the implemented trigger accomplishes the business logic
The Stock of the book needs to be updated correspondingly after a customer has made an order, or a customer has cancelled an order. It can be accomplished by using trigger. You are asked to implement a trigger which needs to take following into consideration: a. The trigger needs to be fired after a new row has been inserted into table Orders, or after a row has been deleted from table Orders which indicates an order has been cancelled b. Each order may contain multiple books in ORDERTITEMS table You also need to write SQL statement or/and PL/SQL code to demonstrate that the implemented trigger accomplishes the business logic
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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The Stock of the book needs to be updated correspondingly after a customer has made an order, or a customer has cancelled an order. It can be accomplished by using trigger. You are asked to implement a trigger which needs to take following into consideration:
a. The trigger needs to be fired after a new row has been inserted into table Orders, or after a row has been deleted from table Orders which indicates an order has been cancelled
b. Each order may contain multiple books in ORDERTITEMS table
You also need to write SQL statement or/and PL/SQL code to demonstrate that the implemented trigger accomplishes the business logic
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