Triggering a database query and region update from drop-down menu selection

I suspect this must be covered somewhere in some how-to or documentation but Google hasn't been of much help here:
A user is filling in a form. The first entry in the form is a drop-down menu. Upon the user selecting a value in the menu I would like to query existing entries in the DB and present results to the user, in a region to the right hand-side of the form, as guidance (i.e.: "here's what we already have for this component").
I am unclear as to whether I should be using computations, javascript or a combination of both here. Pointers welcome. Thanks in advance.

Hello,
Take a look at this example, it does what you want.
http://apex.oracle.com/pls/otn/f?p=11933:48
Regards,
Carl
blog : http://carlback.blogspot.com//
apex examples : http://apex.oracle.com/pls/otn/f?p=11933:5

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"_Lost_Boy" <[email protected]> wrote in
message
news:ga4i6l$cht$[email protected]..
> Aughh! I am almost done with my website, when I go back
to Fireworks and
> add a
> couple new tabs on a drop-down menu. I update the DWT
file in Dreamweaver,
> but
> one of two things happens: either the update simply
doesn't "take", or all
> of
> the <body> section is mysteriously deleted from
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> the
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should be, but
> not
> when I preview in Dreamweaver. Not sure if this is a
Fireworks issue or a
> Dreamweaver so I've posted in both. No one in the
FIreworks forum has
> come up
> with any suggestions yet.
>
> What the hell?
>
> Thanks in advance for the help,
> Brian
>

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Triggering a database query and region update from drop-down menu selection

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