Oracle forms 6i

Dear Expert,
Iam Developing a form in oracle 6i.
In that form i have a user entry block.
in that form the user is entering itemname,no ,......
And i have kept a commit button for the block.
When the user press the commit button.It has to validate the block.
if any duplicate entry is there it has to show a  alert.
Can anybody please send query for me.
daprjoAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

flow01Commented:
Is the entry block based on an existing table ?
Has the table a primairy and/or unique key  defined to prevent duplicatie entries ?

If both questions can be answered with yes , you can depend on the default behaviour of  oracle forms and the oracle databases :  the user wil get an error message.
Your job might be to modify the message in a friendly message for your user.

If not both questions can be answered with yes, try to explain in more detail what you want to do:
the when-validate-item, when-validate-record triggers are problaby the ones to use.


0
daprjoAuthor Commented:
Dear Expert,
If i press the commit button,
it has to loop through the block anf find out the duplicate entries. and show alert that this itemname   has entered for n times.
0
gkhngkdmrCommented:
i hope, you have non-database block,
so,

to show your message, please create an ALERT object with MESSAGE name,

if your blockname is MYBLOCK,
please, write the following code into your button-trigger "WHEN-BUTTON-PRESSED"


it is possible for you to improve the following code.

------------------------------------

declare
  but varchar2(200);
 
begin
    go_block('MYBLOCK');
    first_record;
    loop
        begin    
          insert into <your_table> (a_column, b_cloumn)
          values (:MYBLOCK.a_clm, :MYBLOCK.b_clm);
        exception
           when dupvalonindex then
             set_alert_button("MESSAGE",alert_message_text,"write here your message");
             but := show_alert("MESSAGE");
        end;

        IF :system.last_record = 'TRUE' THEN
        EXIT;
      END IF;
    end loop;
end;

0
Determine the Perfect Price for Your IT Services

Do you wonder if your IT business is truly profitable or if you should raise your prices? Learn how to calculate your overhead burden with our free interactive tool and use it to determine the right price for your IT services. Download your free eBook now!

latorreconsultoresCommented:
last comment is ur best aproach to ur solution.
0
daprjoAuthor Commented:
Dear Expert my block is a database block
and it has no primary key field.
Please help me .


Thanks & Regards,

Priya
0
gkhngkdmrCommented:
if your block is a database block and all items of the block are your db table  columns, and if your table does not have a primary key, you can use PRE-INSERT trigger.

Define the PRE-INSERT Trigger on your block.
in the PRE-INSERT trigger, you can check the data exists or not,

-- in the pre-insert trigger,
declare
   cursor c (p_column1 IN VARCHAR2, p_column2 IN VARCHAR2)  is
        select * from <your_table>
        where column1 = p_column1 and column2 = p_column2;
   r c%ROWTYPE;
begin
   open c( :MYBLOCK.a_clm, :MYBLOCK.b_clm);
   fetch c into r;
   if c%FOUND then
             raise form_trigger_failure;  
  end if;
  close c;
end;
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
daprjoAuthor Commented:
Dear Expert,

Thanks a lot
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Oracle Database

From novice to tech pro — start learning today.