As mentioned in the GDAL documentation:
"OGR Virtual Format is a driver that transforms features read from other drivers based on criteria specified in an XML control file."
GDAL supports the reading and writing of nonspatial tabular data stored as a CSV file, but we need to use a virtual format to derive the geometry of the layers from attribute columns in the CSV file (the longitude and latitude coordinates for each point). For this purpose, you need to at least specify in the driver the path to the CSV file (the SrcDataSource element), the geometry type (the GeometryType element), the spatial reference definition for the layer (the LayerSRS element), and the way the driver can derive the geometric information (the GeometryField ...
