Use triggers to maintain referential integrity, PL-S, Basic Computer Science

Assignment Help:
At times, Brewbean''s has changed the id number for existing products. In the past, they have had to add a new product row with the new id to the BB_PRODUCT table, modify all the corresponding BB_BASKETITEM and BB_PRODUCTOPTION table rows, and then delete the original product row. Can a trigger be developed to avoid all these steps and handle the update of the BB_BASKETITEM and BB_PRODUCT OPTION table rows automatically for a given change in product id? If so, create the trigger and test by issuing an update statement, which changes the IDPRODUCT of 7 to 22. Do a rollback to return the data back to its original state. Also, disable the new trigger after you have completed the assignment.

Related Discussions:- Use triggers to maintain referential integrity, PL-S

Construct a conditional profits table, Question (a) A dairy wants to de...

Question (a) A dairy wants to determine the quantity of butter it should produce to meet the demand. Past records have shown the following demand pattern:

Electronic transmission frequency, Electronic  transmission Frequency: ...

Electronic  transmission Frequency: Frequency is the rate at which a wave or cycle alternates between high and low (analog mode) or on and off (digital mode). For example, the

The gigo principle, The GIGO Principle : This is a simple principle with a...

The GIGO Principle : This is a simple principle with a clear message and universal application - Garbage In - Garbage out! Always try and enter any data in the form you want to

Why is the random class in the .net framework not suitable, QUESTION (a...

QUESTION (a) (i) Why is the Random class in the .NET framework not suitable for generating random bytes for cryptography purposes? (ii) Mention two characteristics required

Vdu visual display unit output, VDU (Visual Display Unit) output...

VDU (Visual Display Unit) output Make sure that VDUs are of an appropriate type. They can cause severe eyestrain and tension if you do not check: (a) Colour (

Write a program to swap two names between two variables, QUESTION (a) W...

QUESTION (a) Write a program to swap two names between two variables for examples: N1 = "Mary Anne" N2 = "Queen Mary". The program should make use of an appropriate Fu

Methods of working with files, There are two methods to work with files, th...

There are two methods to work with files, the first one is through file control blocks or "FCB" and the second one is through communication channels, also identified as "handles".

Assignment 4: Cloud Computing to the Rescue, The cost of building and maint...

The cost of building and maintaining an organizational computing ecosystem has become a bigger part of most organizations’ budgets. Organizations have been looking for ways to redu

Artificial intelligence, Artificial Intelligence Artificial Intelligen...

Artificial Intelligence Artificial Intelligence is difficult science to explain, as it has fuzzy borders with  computer science, mathematics,  philosophy, physics,  psychology

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd