2 Chapter 51. Overview of PostgreSQL Internals
6 51.1. The Path of a Query
7 51.2. How Connections Are Established
11 51.3.2. Transformation Process
13 51.4. The PostgreSQL Rule System
14 51.5. Planner/Optimizer
16 51.5.1. Generating Possible Plans
22 This chapter originated as part of [sim98] Stefan Simkovics' Master's
23 Thesis prepared at Vienna University of Technology under the direction
24 of O.Univ.Prof.Dr. Georg Gottlob and Univ.Ass. Mag. Katrin Seyr.
26 This chapter gives an overview of the internal structure of the backend
27 of PostgreSQL. After having read the following sections you should have
28 an idea of how a query is processed. This chapter is intended to help
29 the reader understand the general sequence of operations that occur
30 within the backend from the point at which a query is received, to the
31 point at which the results are returned to the client.