Preface

Table of Contents
What is PostgreSQL?
What is Postgres-XL?
A Brief History of PostgreSQL
Conventions
Further Information
Bug Reporting Guidelines

This book is the official documentation of Postgres-XL. It has been written by the Postgres-XL developers and other volunteers in parallel to the development of the Postgres-XL software. It describes all the functionality that the current version of Postgres-XL officially supports.

Postgres-XL is essentially a collection of multiple PostgreSQL databases to provide both read and write performance scalability. It also provides the same full-featured transaction consistency as PostgreSQL provides, at the exception of SSI which is incomplete.

Postgres-XL inherits almost all major features from PostgreSQL. This document is also based upon PostgreSQL reference manual.

To make the large amount of information about PostgreSQL manageable, this book has been organized in several parts. Each part is targeted at a different class of users, or at users in different stages of their PostgreSQL experience: