Can ogr2ogr be used to append multiple DBF files? It works with SHP files, but I can't see how to do it with DBF files on their own. It ought to be possible, considering DBF is a subset of SHP.
Say you have three DBF files with the same field structure (schema), and you want to combine them into one
These files can be either shapefiles or sole DBF files. It will work either way.