Chapter 68. Database Physical Storage
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Chapter 68. Database Physical Storage

Table of Contents

68.1. Database File Layout
68.2. TOAST
68.2.1. Out-of-Line, On-Disk TOAST Storage
68.2.2. Out-of-Line, In-Memory TOAST Storage
68.3. Free Space Map
68.4. Visibility Map
68.5. The Initialization Fork
68.6. Database Page Layout
68.6.1. Table Row Layout
68.7. Heap-Only Tuples (HOT)

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

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67.6. Hash Indexes Home 68.1. Database File Layout