Chapter 70. Database Physical Storage

|Chapter 70. Database Physical Storage|                    |                   |                  |                                 |
|:-----------------------------------:|--------------------|-------------------|------------------|---------------------------------|
|  [Prev](hash-implementation.html)   |[Up](internals.html)|Part VII. Internals|[Home](index.html)| [Next](storage-file-layout.html)|

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## Chapter 70. Database Physical Storage

**Table of Contents**

[70.1. Database File Layout](storage-file-layout.html)[70.2. TOAST](storage-toast.html)[70.2.1. Out-of-Line, On-Disk TOAST Storage](storage-toast.html#STORAGE-TOAST-ONDISK)[70.2.2. Out-of-Line, In-Memory TOAST Storage](storage-toast.html#STORAGE-TOAST-INMEMORY)[70.3. Free Space Map](storage-fsm.html)[70.4. Visibility Map](storage-vm.html)[70.5. The Initialization Fork](storage-init.html)[70.6. Database Page Layout](storage-page-layout.html)[70.6.1. Table Row Layout](storage-page-layout.html#STORAGE-TUPLE-LAYOUT)

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

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|:-------------------------------|:------------------:|--------------------------------:|
|      69.2. Implementation      | [Home](index.html) |    70.1. Database File Layout   |

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