6. GIS (Geographic Information System)
GIS can be viewed as a computerized map
management system. It manages digital information,
stores digital maps and displays geographic
information. The computer screen is an interface to
convey geographic information. The database
management focuses on analysis, access and
integration of the rich geographical information.
Aided by the power of computers, GIS establishes the
spatial information for easy access, management,
analysis and display. It can also be linked to other data
system to provide a wider range of applications [4].
Early geographic information systems focused on
the processing of geospatial information and its
attribute data with only limited graphic capabilities.
With the increasing power of computer, database
management, graphical capability, spatial analysis and
other technical advances, the function of geographic
information system is getting much better. Therefore,
this study will use GIS to analyze the railway
maintenance database.