This composite dataset is composed of the following files:
shapefile.shp (Geometry File (shp))
shapefile.shx (Geometry index File (shx))
shapefile.dbf (Columnar attributes for each shape (dbf))
shapefile.prj (Projection description (prj))
(optional)
shapefile.sbn (Spatial index of the features (sbn))
(optional)
shapefile.sbx (Spatial index of the features (sbx))
(optional)