خريطة الأساس

خريطة تتضمن المعالم الجغرافية (الطرق، مثلاً) المستخدمة لتمثيل المواقع.

Definition: The base map is the most accurate spatial database within a data system. Base maps tend to be streets, parcels and other fundamental layers. Because base maps tend to serve as the point of reference when creating other spatial databases, they tend to have the highest level of accuracy.

للتعرف اكثر:

http://resources.arcgis.com/content/basemap-data-model