chapter  9
12 Pages

Computer data storage

Inourintroductorytreatmentoftherepresentation ofgeographicalinformation(inChapter2),adistinctionwasmadebetweenhigherlevelconceptualviews ofinformationandthelowerlevelrepresentations thatarenearertothecomputer'sfacilitiesfordata storage.Inthischapterwetakeacloserlookatthese lowerlevelrepresentations.Manyoftheconceptsand associatedterminologyintroducedhere,particularly thoseintroducedearlyoninthechapter,arequite importantforusersofGIStounderstand,sincethey areintegraltothefacilitiestypicallyprovidedfor storingandmanagingdata.