| Summary: | 碩士 === 國立成功大學 === 測量工程學系 === 85 === At the beginning of development in geographic information
systems (GISs), GISs are usually developed as single-format
systems, vector-based or raster-based, due to the limitations of
data processing and data storage capabilities provided by a
computer. As computer technology progresses, the development of
GISs tends to combine vector and raster functionalities into an
integrated system. In order to develop an integrated GIS, the
essential component is the creation of an integrated geographic
database for saving all types of geographic data. The purpose of
this thesis is to design and develop geographic database for
such a development. In this study, the requirement for an
integrated GIS and the characteristics of vector and raster data
were taken into account to design an integrated database with a
data model and appropriate data structures for holding vector
and raster data. Furthermore, a prototype of the integrated
geographic database was implemented using a persistent data
programming language. Real geographic data was used to test
the capability and the performance of the prototyped geographic
database system. The result of the experiment shows that
integrated database can display vector and raster data
separately or have the superimposition of them in a window; it
can also support the database query for the vector、raster or
attribute data of a geographic object. The thesis concludes that
the proposed integrated geographic database is capable of
managing vector、raster and attribute data in a single database
system, it may provide a useful core for the further development
of an integrated GIS.
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