Chapter 67. Database Physical Storage
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Chapter 67. Database Physical Storage

Table of Contents

67.1. Database File Layout
67.2. TOAST
67.2.1. Out-of-Line, On-Disk TOAST Storage
67.2.2. Out-of-Line, In-Memory TOAST Storage
67.3. Free Space Map
67.4. Visibility Map
67.5. The Initialization Fork
67.6. Database Page Layout
67.6.1. Table Row Layout
67.7. Heap-Only Tuples (HOT)

This chapter provides an overview of the physical storage format used by PostgreSQL databases.

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66.6. Hash Indexes Home 67.1. Database File Layout