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Essay / Research Paper Abstract
This 6 page paper looks at four issues concerning Geographical Information Systems (GIS). The first part of the paper defines what is meant by GIS and looks at it's' components, the second part of the paper considers different sources of data for both vector and raster data. The third part of the paper considers the differences that will be seen in an object orientated database compared to a relational database. The last part of the paper discusses at the three types of projections used; cylindrical projection, azimuthal projection and conical projection. The bibliography cites 2 sources.
Page Count:
6 pages (~225 words per page)
File: TS14_TEGISbase.rtf
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Unformatted sample text from the term paper:
2006). A simple and possibly superficial definition by Rhind (1989, quoted Heywood, 2006; 18) states that GIS is "a computer system that can hold and use data describing places on
the Earths surface", a more comprehensive definition is given by the department for the Environment stating that it is "a system for capturing, storing, checking, integrating, manipulating analyzing and displaying
data which are spatially referenced to the Earth" (quoted Heywood, 2006; 18). This is a similar definition given by the US Environmental Systems Research Institute (1995), which states that it
is "an organized collection of computer hardware and software, geographic data, and personnel designed to efficiently capture, store, update, manipulate, analyze, and display all forms of geographically referenced information".
There are many examples of GIS in the modern world, from simple common satellite navigation systems which have become popular with drivers, through to the use of organizations such as
Ordinance Survey for mapping purposes and governments for use in environmental management with application such as risk assessment, for example an assessment and models to identify the risk of floods.
Just as there are many definition of GIS it may also be argued that there are also different views on the relevant components, on one hand it may be
viewed as simple a software package that uses a variety of tools in order to function (Heywood, 2006). A more practical approach looks at the parts of the system, which
includes the computer system that is used for the system, including the hardware, which maybe a full desktop or other computer or can be a hand held or mobile device,
along with the operating systems that is used. For a satellite navigation system it may be placed on a hand held device or special divide that runs either a dedicated
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