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(a)
Toolbox-based Definitions:
'A powerful set of tools for collecting, storing,
retrieving at will,transformation and displaying spatial data from
the real
world'.
'A
system for capturing, storing, cheking, manipulating, analysing
and displaying data which are spatially refrenced to the Earth'
(b)
Database Definitions:
'A
database system in which most of the data are spatially indexed,and
upon which a set of procedure operated in
order to answer queries about spatial entities in the database'
(Smith et al.1987)
'Any
manual or computer based set of procedures used to store
and manipulate geographically referenced data' (Aronoff
1989).
(c)
Organization-based Definitions:
'An
automated set of function that provides professionals with advanced
capabilities for the storage, retrieval, manipulation and display
of geographically located data'
(Ozemoy,Smith, and Sicherman 1981).
'An
institutional entity, reflecting an organizational structure
that integrates technology with a database, expertise and continuing
financial support overtime' (Carter
1989).
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