Graphical Notation - Data Warehouse Systems: Design and Implementation - page 585

spatial data type
for level

name

State

Spatial level
(short description)

spatial data type
for level

name

State

identifier attribute

StateName
S tatePopulation
StateArea
StateMajorActivity
Capital

thematic attributes

spatial data type
for attribute

spatial attribute

Spatial level
(with attributes and identifiers shown)

topological
relationship

County State

CountyName
CountyPopulation
CountyArea

StateName
StatePopulation
Capital

Spatial hierarchy

Highway
Maintenance

name

topological
relationship

Spatial fact
(short description)

Highway
Mainten ance

name

topological
relationship

measure
calculated with
spatial operators
spatial measure

Length
CommonArea

spatial data type
for measure

Spatial fact
(with measures shown)