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Javascript: Open external database, retrieve a doc, and read a field?

Is it possible through Javascript to open an external database, retrieve a sbpecfic document, and finally read a field off of that document? I need to do this on a form after a part number field is entered and then go out and get this external data and fill in another field on the form.
JavaScript is primarily used as a client-side scripting language. So, there is no way to do this directly, but there are other ways to accomplish this. If the user is entering the number in a text field
(&ltINPUT type-="text")
, you could have the user click a button or a link that that would submit the form to the server and then either run a server side script (agent in LotusScript or Java) from the WebQuerySave event of the form that could retrieve the value and write it to profile doc, or add it to a querystring parameter. You'd then redirect them back to the form with additional information, which would be added via a WebQueryOpen agent.

There are other ways that might work, but an approach similar to the one outlined above is probably the most flexible.

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