Hi *,
seems the Base-documentation will be published soon. A lot of people are
working for this.
Might be you are also interested in a description for XML Form
Documents, which could be created by LibreOffice. I have written such a
description some years ago, because I don't found a description, which
shows how to work with this part of LO. It describes how to create a XML
form document and how to get the data out of a form-document in
different ways - including using such a form together with Base ...
You could find this German description on
https://de.libreoffice.org/get-help/documentation/
Kurzanleitungen > XML-Formulardokumente + Formularbeispiele (*.zip-Datei)
... or on my homepage.
Regards
Robert