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

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

Digital to analogue conversion (dac), Digital to analogue conversion (dac):...

Digital to analogue conversion (dac): Since many systems used on aircraft will require outputs in analogue form, it will be necessary to be able to convert the digital informat

Long term goal of artificial intelligence, Long term goal of artificial int...

Long term goal of artificial intelligence: This is not to be complex with the applications of AI programs to other sciences, discussed later. Rather, it is just pointing out th

Discuss on segmentation, Question 1 What is an operating system? Explain i...

Question 1 What is an operating system? Explain its functions Question 2 Discuss round-robin scheduling Question 3 Discuss on segmentation Question 4 What are the s

Multiple allocations, You can also allocate a single value to several varia...

You can also allocate a single value to several variables at the same time. For instance: X=y=z =1 Now, an integer object is generated with the value 1, and all three variables are

Packet switching, Packet Switching: This is one of recent techniques o...

Packet Switching: This is one of recent techniques of switching. Packet switching was originally developed for use by ARPA network by the Defence Department of US. According t

DBMS, what is the meaning of data definition

what is the meaning of data definition

., why first generation computers are better than fourth generation compute...

why first generation computers are better than fourth generation computers

Probability, 2. Mike sells on the average 15 newspapers per week (Monday – ...

2. Mike sells on the average 15 newspapers per week (Monday – Friday). Find the probability that 2.1 In a given week he will sell all the newspapers [7] 2.2 In a given day he w

Online searching, Online Searching: The real difference between manual...

Online Searching: The real difference between manual searching and online searching lies, according to William A. Katz, in the mechanics and the jargon of the latter. However,

Explian, explain anatomy of digital coputer

explain anatomy of digital coputer

Write Your Message!

Name

Email id

Message

Verfication Code

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!

Submit Assignment

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