April 2011
Beginner to intermediate
520 pages
18h 55m
English
Content preview from PostGIS in Action
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Chapter 1. What is a spatial database?
This chapter covers
- Spatial databases in problem solving
- Geometry data types
- Modeling with spatial in mind
- Why PostGIS/PostgreSQL
- Loading and querying spatial data
In this chapter we’ll first introduce you to spatial databases. You’ll learn what they are and how they allow you to model space and perform proximity queries that are impossible with a plain relational database system. We’ll then focus on PostGIS, a spatial database extender for the PostgreSQL database management system. We’ll dive in with quick examples of loading spatial data and performing proximity analysis with PostGIS.
1.1. Thinking spatially
Popular mapping sites such as Google Maps, Virtual Earth, MapQuest, and Yahoo have empowered ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.