7
What
is a GIS?
A special case of information systems where the database consists of
observations on spatially distributed features, activities, or events, which are definable in space as points,
lines or areas…”
Dueker (1979: 106)
“…a powerful set of tools for
collecting, storing, retrieving at will, transforming and displaying spatial data from the real world.”
Borrough (1986:6)
An information technology which store, analyze and displays both spatial and
non-spatial data.
• Parker (1988:1957)