gis data base

GIS DATA BASE CREATION 

A spatial database or GIS database is a database that is enhanced to store and access spatial data or data that defines a geometric space. These data are often associated with geographic locations and features or constructed features like cities. Data on spatial databases are stored as coordinates, points, lines, polygons, and topology. Some spatial databases handle more complex data like three-dimensional objects, topological coverage, and linear networks.

The following are the advantages of GIS data base creation:

• Reduced data redundancy

• Reduced updating errors and increased consistency

• Greater data integrity and independence from applications programs

• Improved data access to users through the use of host and query languages

• Improved data security

• Reduced data entry, storage, and retrieval costs

• Facilitated development of new applications program