PostgreSQL: Documentation: 17: Chapter 65. Database Physical Storage

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Chapter 65. Database Physical Storage
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Chapter 65. Database Physical Storage

Table of Contents

65.1. Database File Layout

65.2. TOAST

65.2.1. Out-of-Line, On-Disk TOAST Storage
65.2.2. Out-of-Line, In-Memory TOAST Storage

65.3. Free Space Map

65.4. Visibility Map

65.5. The Initialization Fork

65.6. Database Page Layout

65.6.1. Table Row Layout

65.7. Heap-Only Tuples (HOT)

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

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64.6. Hash Indexes	Home	65.1. Database File Layout

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