Extensions are a powerful way of packaging together related database objects, such as tables, functions, and routines, making the management of the objects as a single unit easier. Extensions allow you and other developers to literally extend the already rich PostgreSQL set of features by providing a clear, concise, and accurate way of installing, upgrading, and removing features and objects. In this chapter, you will see what extensions are and how they can be installed, upgraded, or removed by means of automated tools or manually. Moreover, you will learn how to build your own extension from scratch so that you will be immediately productive in packaging your own scripts and tools to distribute ...
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