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14th February 2019:
PostgreSQL 11.2, 10.7, 9.6.12, 9.5.16, and 9.4.21 Released
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PostgreSQL 9.1
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7.1
PostgreSQL 9.1.24 Documentation
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Chapter 55. Database Physical Storage
Table of Contents
55.1.
Database File Layout
55.2.
TOAST
55.3.
Free Space Map
55.4.
Visibility Map
55.5.
The Initialization Fork
55.6.
Database Page Layout
This chapter provides an overview of the physical storage format used by
PostgreSQL
databases.
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Database File Layout