Information Technology Reference
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Fig. 5.
Towards a Development Model
Database
rsi
rsj
rsk
Fc
Fe
Fa
Fb
Fd
n2
n4
n1
n
n'
n"
n3
n5
Storage
Figure 5 shows a number of Analysis functions and their interrelations with
respect to input and output data. Output from some function applications serve
as input to other function applications. Outputs (results) are named, and so are
input arguments. The above graph (albeit conceptual and very simple) shows an
overall \functionality", an overall \structure" of the problem, one that is often,
in the demographic information system literature, referred as being \ill-dened"
and \unstructured"! In the above picture we have simplied many aspects: simple
provision of resource arguments (rather than their prior ltering through lters
etc., no user provided invocation time arguments, etc.
Requirements Capture 14
A GIS+DIS{based DSS for DS must therefore be
able to draw, upon request from the preparers, analyzers, planners, developers,
and decision makers, the \model" graph of all Functions invoked | whether
their results were ever again applied or not | together with a complete \trace"
of Data used, whether originating from the Database or from Storage (where it
would reside if that Data was the result of previous Function applications).
8 Conclusion
8.1
On DSS for SD
We have sketched a main outline of how we intend to tackle the issue of decision
support system for sustainable development, for how we intend to tackle the
issue of a
federated geographic information system and demographic information
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