At my work have inherited several shapefiles that originate from MapInfo that I am bringing into a new project in QGIS. I have the opportunity to change the column names, add and subtract columns and because there is not too much data in them yet I can start afresh and adjust the field lengths too.
I notice that some of the field lengths are a lot bigger than they need to be and I remember from past database creation 20 years ago, or so, that it is best to keep the field lengths to be no longer than they need to be to save on 'space', to improve efficiency.
Is this still desirable or does the field length not matter anymore?