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Chapter 73. Database Physical Storage
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Chapter 73. Database Physical Storage

Table of Contents

73.1. Database File Layout

73.2. TOAST

73.2.1. Out-of-Line, On-Disk TOAST Storage
73.2.2. Out-of-Line, In-Memory TOAST Storage

73.3. Free Space Map

73.4. Visibility Map

73.5. The Initialization Fork

73.6. Database Page Layout

73.7. Heap-Only Tuples (HOT)

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

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72.2. Implementation	Home	73.1. Database File Layout

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