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PostGIS in Action

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PostGIS in Action, 9781935182269 (1935182269), Manning Publications, 2011
Whether you're canvassing a congressional district, managing a sales region, mapping city bus schedules, or analyzing local cancer rates, thinking spatially opens up limitless possibilities for database users. PostGIS, a freely available open-source spatial database extender, can help you answer questions that you could not answer using a mere relational database. Its feature set equals or surpasses proprietary alternatives, allowing you to create location-aware queries and features with just a few lines of SQL code.
 
PostGIS in Action is the first book devoted entirely to PostGIS. It will help both new and experienced users write spatial queries to solve real-world problems. For those with experience in more traditional relational databases, this book provides a background in vector-based GIS so you can quickly move to analyzing, viewing, and mapping data. Advanced users will learn how to optimize queries for maximum speed, simplify geometries for greater efficiency, and create custom functions suited specifically to their applications. It also discusses the new features available in PostgreSQL 9.0 /9.1 and PostGIS 2.0 and provides tutorials on using additional open source GIS tools in conjunction with PostGIS.
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Communications Systems
Communications Systems
A new edition that takes students to the cutting edge and back!

Extensively revised and updated, this new fourth edition of COMMUNICATION SYSTEMS is the most complete undergraduate textbook on the theories and principles behind today's most advanced communications systems.

New features...

Practical TCP/IP and Ethernet Networking for Industry (Practical Professional Books)
Practical TCP/IP and Ethernet Networking for Industry (Practical Professional Books)
One of the great protocols that has been inherited from the Internet is TCP/IP and this is being used as the open standard today for all network and communications systems. The reasons for this popularity are not hard to find. TCP/IP and Ethernet are truly open standards available to competing manufacturers and providing the user with a common...
Android Phones For Dummies (For Dummies (Lifestyle))
Android Phones For Dummies (For Dummies (Lifestyle))

Your full-color guide to putting your Android to work for you

Your smartphone is essentially your lifeline—so it's no wonder you chose a simple-to-use, fun-to-customize, and easy-to-operate Android. Cutting through intimidating jargon and covering all the features you need to know about your Android phone, this...


Excel 2010 Just the Steps For Dummies
Excel 2010 Just the Steps For Dummies

Welcome to the world of Microsoft Excel, the most popular and powerful spreadsheet program in the world. You may ask: “What is a spreadsheet program?” A spreadsheet program is a computer program that features a huge grid designed to display data in rows and columns. You can use it to perform mathematical, logical, and other types...

Mastering Python Scripting for System Administrators: Write scripts and automate them for real-world administration tasks using Python
Mastering Python Scripting for System Administrators: Write scripts and automate them for real-world administration tasks using Python

Leverage the features and libraries of Python to administrate your environment efficiently.

Key Features

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Engineering Long-Lasting Software: An Agile Approach Using SaaS and Cloud Computing, Beta Edition
Engineering Long-Lasting Software: An Agile Approach Using SaaS and Cloud Computing, Beta Edition

(NOTE: this Beta Edition may contain errors. See http://saasbook.info for details.) A one-semester college course in software engineering focusing on cloud computing, software as a service (SaaS), and Agile development using Extreme Programming (XP). This book is neither a step-by-step tutorial nor a reference book. Instead, our goal is to...

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