After a good start many months ago of getting into GIS through QGIS, I had to drop what I was doing and did not touch it for quite some time. I am now able to get back into it and have a need to load GML vector maps. It strikes me that they have the same properties as Shapefiles, but there must be a difference.
Can someone give a simple explanation of the difference and the advantages either way?
I see that one can be converted into the other, so if there must be a reason to do so.