I am having a problem with a form for a database that I constructed without the help of the form wizard, many years ago. I know that I have to link or connect the form to the database but I can't find out how to do it.
It is a standalone form, isn't it? Database is an internal database (only a file *.odb)? Have a look for the Base file (*.odb).Go to Tools → Options → LibreOffice Base → Databases and register the database.