PAYMENT
UNIT –IV
VECTOR DATA MODEL: REPRESENTATION OF
SIMPLE FEATURES- TOPOLOGY AND ITS
IMPORTANCE; COVERAGE AND ITS DATA
STRUCTURE, SHAPE FILE; DATA MODELS FOR
COMPOSITE FEATURES OBJECT BASED VECTOR
DATA MODEL; CLASSES AND THEIR
RELATIONSHIP; THE GEOBASE DATA MODEL;
GEOMETRIC REPRESENTATION OF SPATIAL
FEATURE AND DATA STRUCTURE, TOPOLOGY
RULES