1. ADVANTAGES OF GIS OVER MAPS AND
CAD
• SANJAY JADEJA
• MECHANICAL 5th
• 110863119003
• D.A.U.G.T

2. GEOGRAPHICAL INFORMATION SYSTEMS
1. GIS: A type of software
A computer system that allows us to handle information about
the location of features or phenomena on the Earth’s surface
Has all the functionality of a conventional DBMS plus much of
the functionality of a computer mapping system
GIS as a DBMS that allows us to explicitly handle the spatial
Common examples:
ArcView
ArcGIS
MapInfo

3. GIS – SOME DEFINITIONS
GIS may include manual systems, however, it usually refers
to a computerised database system for
capture, storage, retrieval, analysis and display of spatial
data (Huxhold, 1991).
GIS is capable of assisting the storage, retrieval and
manipulation of spatially referenced data such as street
address or a census tract (Nedovic-Budic, 1999).
GIS is most useful when used to perform data analysis (Lee
and Wong, 2001, viii)

4. GIS
USES
VARIOUS DATA AND VARIOUS DATA
1
SOURCES FORMATS
2 DIGITAL TEXT TABULAR
MAPS IMAGE GPS
PRODUCTS DATA DATA
DATABASE
MAPS REPORTS
4 3 4

5. Advantages GIS
Can cope with larger amounts of data
Can cover large study areas (the whole world if necessary)
Can cope with unlimited and frequent edits and changes
More robust and resistant to damage
Faster and more efficient
Requires less person time and money

6. Limitations of GIS
Data are expensive
Learning curve on GIS software can be long
Shows spatial relationships but does not provide
absolute solutions
Origins in the Earth sciences and computer science.
Solutions may not be appropriate for humanities
research