How to set a validation rule on a unique key formed by more than columns

Hi all
I use Jdeveloper 11.1.1.2
I have a table with a column 3: col1, col2, col3. On that note, I have defined a unique key formed by col2 and col3.
How can I define a validation rule on this key?
In the entity object, I can't find anything useful, I see only attributes, but not the single key just defined (in the source of the entity object I have the code on the unique key).

Thank you

Andrea

Published by: Andrea9 on February 11, 2010 03:46

Yes, that's correct.

You will realize that the approach set out in the Manual:

(1) has a possibility to create duplicates (that is, you still need the unique key in the DB).

(2) is slower (requires intermediate to read all values db at the intermediate level)

You could, as Marie-Ange suggested to write the code as described in the post to blog as well - however, it has the same drawbacks.

If you really need ID dups before validation, you will have to live with the disadvantages of the approach defined.

Best,

John

Tags: Java

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    increments and these increases are too wide for I have to manually align the fields.

    I don't know why adobe did not allow small increments, the tool is essential, and this reduces its usefulness in half.

    Manually aligning them be too bad but the progressive jackpot is also set to move in increments too large.

    As far as I can tell it is the smallest unit of movement is 2 points. But there are moments where I really need to spend 1 point,

    or even 1/2 pt.

    Plug-ins to do this things function the way it should?

    A fine workaround would be a grid I have less 2 points, then I could just check 'snap to grid' and move away.

    If you have 9 Pro on a PC, you should have installed Live Cycle Designer. It has more useful features. Webcam Live Cycle Designer is not provided with Acrobat Mac, for reasons that I don't know. Looks like you can set the x - y coordinates.

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