October 2013
Beginner to intermediate
244 pages
5h 53m
English
Content preview from Joe Celko’s Complete Guide to NoSQL
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Chapter 8
Geographical Data
Abstract
Geographical data, geospatial, or spatiotemporal databases deal with geography. Most of the queries deal with quantities, densities, and contents within a geographical area. While we learned longitude and latitude in school, there are other methods for locating positions on Earth. In particular, HTM is much more accurate and better suited for satellites. GISs also have to integrate traditional static data into GIS indexes, such as the names of businesses with their locations. But it also has to include dynamic and temporal information. In particular, queries that deal with flow and time, such as traffic patterns, are difficult.
Keywords
geographical information system (GIS); geographical data; Canada Geographic ...
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