1.   One type of query refers solely to the absolute or relative locational properties of the spatial entities.

2.   Other queries may relate to specific attributes of the spatial entities, or to combinations of these attributes, to the exclusion of any locational property.

3.   The first is cartographic and defines the relative or absolute location of spatial entities in the area of interest.

4.   The second kind of data consists of the attributes or properties of the spatial entities shown on the maps.

5.   One relates to the absolute and relative locational properties of the spatial entities themselves while the second refers to the attributes or properties of the spatial entities.

6.   A GIS stores both cartographic data and attribute data associated with the spatial entities that are represented on the maps.