working with databases in acrobat dc

[gabrielas27168592]

How can I fill an interactive field or a combo with data from a database ?

[Test Screen Name]

With some difficulty but you could submit to a web process to fetch back filled in keys by returning FDF.

[try67]

Assuming this is an Acrobat form and not a LiveCycle Designer form, you can't do it, at least not directly.

One alternative is to export the values from the DB to a text file and then read that file from the PDF and use it there, but that would require a complex set of scripts.

[Karl Heinz Kremer]

As was already indicated, you can use FDF. If your solution only needs to run on Acrobat, and not the free Reader, you can also use SOAP. See here for a simple example: Getting a Serial Number Into a Form Using SOAP - KHKonsulting LLC