What is Vector Data Model of GIS

Vector Data Model As discussed in raster data article that earth surface features can be created in both raster and vector format as per requirement of user. For example wetland mapping feature such as pond can be created in both data formats, in vector as polygon and grid/pixels format in raster. Vector Data Model is an object based approach to the representation of real world features. This data model is best suited to represent discreet objects. In this method the entire earth surface feature including man-made and natural can be represented by only three entities in GIS . These entities name- Point Line Polygon In this all the features in which only locations is presented than Point entity used for representation in GIS software , However for representation of all linear features, line entity used in GIS tools . To represent any enclosed feature of earth and representation of any feature which has area entity, in that case, polygon entity is used in vector data.