On Column Security

Question

Hi All!
I have two blocks (Master and Detail) in detail block I want to make security on column level. Like I have three columns in detail block.
Item Code, Item Name, Packing Size
Now, I want to do that, when user enter Item Code 1 then second time Item Code 1 must not occure on form level not database level in that column. Please send me solution...
Help Me...

Answer 1

Hi All!
I found this solution and I want to share this solution to all.
First of All,
You should take third block named CTRL and make two text fileds in that block with following specifications.
1. CHARSAVE its DataType CHAR(30)
2. MATCH_FOUND its DataType NUMBER(12)
Similarly, make MATCH_FOUND field in detail block with same description.
OK, These field's CANVAS must be null.
Now, you make a function named COMPARISON Like Following:
Function Comparison( val1 Varchar2, val2 Varchar2 ) Return Number Is
answer Number := 0;
Begin
If ( val1 = val2 ) Then
answer := 1;
End If;
Return( answer );
End;
Now, go to the MATCH_FOUND field from Object Navigator which you already make into the detail block and go to its Property Hi All!
I found this solution and I want to share this solution to all.
First of All,
You should take third block named CTRL and make two text fileds in that block with following specifications.
1. CHARSAVE its DataType CHAR(30)
2. MATCH_FOUND its DataType NUMBER(12)
Similarly, make MATCH_FOUND field in detail block with same description.
OK, These field's CANVAS must be null.
Now, you make a function named COMPARISON Like Following:
Function Comparison( val1 Varchar2, val2 Varchar2 ) Return Number Is
answer Number := 0;
Begin
If ( val1 = val2 ) Then
answer := 1;
End If;
Return( answer );
End;
Now, go to the MATCH_FOUND field from Object Navigator which you already make into the detail block and go to its Property Platte by pressing F4 Key.
Go to Calculation---->Calculation Mode--->Formula
Go to Calculation---->Formula--->Comparison(:CTRL.CHARSAVE, :DETAIL_BLOCK.FIELD_WHICH_YOU_WANT)
Now, go to the MATCH_FOUND field from Object Navigator which you already make into the CTRL BLOCK and go to its Property Platte by pressing F4 Key.
Go to Calculation---->Calculation Mode--->Summary
Go to Calculation---->Sumary Function---->Sum
Go to Calculation---->Sumrized Block----> Detail_Block
Go to Calculation---->Sumrized Item---->MATCH_FOUND
Now, finally you should make a Trigger in detail block level named WHEN-VALIDATE-RECORD or a Button which you want and type this code into PL/SQL Editor.
:CTRL.CHARSAVE := :DETAIL_BLOCK.:DETAIL_BLOCK.FIELD_WHICH_YOU_WANT;
IF :CTRL.MATCH_FOUND > 1 THEN
MESSAGE( 'This record is duplicated.' );
RAISE FORM_TRIGGER_FAILURE;
END IF;
Now, compile the form and run the form and give similar values into same column in different rows then you will receive error message.
Nice Guys. This is the trick point....