updating table dependent on another table

Question

5.00/5 (1 vote)

See more:

SQL-Server-2008

i have table CostSheets and table Vouchers that has aforeign key which is the primary key of CostSheets and the relation between them is one to many
i want to do the following
- if i update CostSheets the collection of Vouchers is updated
because in DataAccessLayer CostSheets has acollection of Vouchers
while i update CostSheets the collection of Vouchers is updated or
while i delete CostSheets the collection of Vouchers is deleted

Posted 17-Mar-12 4:46am

dev_ahmedma3dawy

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Maciej Los · Answer 1 · 2012-05-01T07:33:00

This is the structure of your tables:

RELATIONS

CostSheets
CSID (PK)
CSField2
CSField3


one___
\|__many

Vouchers
VID (PK)
CSID (FK)
Field3

You need to enforce referential integrity, using ON UPDATE CASCADE and ON DELETE CASCADE commands. For example:

SQL

ALTER TABLE History.ClientVersionMap ADD CONSTRAINT FK_ClientId_Version
FOREIGN KEY(ClientId, Version) REFERENCES Reports.ClientVersionMap(ClientId, Version)
ON DELETE CASCADE ON UPDATE CASCADE

More at:
ALTER TABLE[^]
table_constraint[^]
DELETE CASCADE and UPDATE CASCADE[^]