Leo Hsu eBooks

If you're thinking about migrating to the PostgreSQL open source database system, this guide provides a concise overview to help you quickly understand and use PostgreSQL's unique features. Not only will you learn about the enterprise class features in the 9.2 release, you'll also discover that PostgeSQL is more than just a database system--it's also an impressive application platform. With numerous examples throughout this book, you'll learn how to achieve tasks that are difficult or impossible in other databases. If you're an existing PostgreSQL user, you'll pick up gems you may have missed along the way....

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 boo...