RE: Database validation.

["Mangavalli, Ramanujam" <RamM@xxxxxxxxxxx>]

well, saurabh, you can add use constraints and triggers. Very nice way of
enforcing database validations and business rules. 

In order to add a unique key constraint, all you need to do is to issue the
following as an SQL command:

ALTER TABLE library/table_name ADD UNIQUE (column_Name)
This will add a unique key constraint to the table. 
There are a bunch of other commands to add referential constraints,
triggers, check constraints, etc... They are all available on the info
center website in pdf format. 
Hope this helps.....

 

-----Original Message-----
From: Sherlock Holmes [mailto:ediam@visto.com]
Sent: Wednesday, March 14, 2001 8:30 PM
To: JAVA400-L@midrange.com
Subject: Database validation.


We are working on an application which requires a validation of the unique
key at the database.But being relatively new to both Java(Being used as the
front end)and DB2 on AS400(The database),we are facing some problems on the
same.I just wanted to know of any way by which the validations can be done
at the database level itself and not on the client side.
That may be anything , from writing a servlet or to writing a CL program on
the AS400.
It will be of great help to me and the application on getting the solution.
Hoping for a quick solution.
Saurabh Ganguly

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