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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>74.3. BKI File Format</title><link rel="stylesheet" type="text/css" href="stylesheet.css" /><link rev="made" href="pgsql-docs@lists.postgresql.org" /><meta name="generator" content="DocBook XSL Stylesheets Vsnapshot" /><link rel="prev" href="system-catalog-initial-data.html" title="74.2. System Catalog Initial Data" /><link rel="next" href="bki-commands.html" title="74.4. BKI Commands" /></head><body id="docContent" class="container-fluid col-10"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">74.3. <acronym class="acronym">BKI</acronym> File Format</th></tr><tr><td width="10%" align="left"><a accesskey="p" href="system-catalog-initial-data.html" title="74.2. System Catalog Initial Data">Prev</a> </td><td width="10%" align="left"><a accesskey="u" href="bki.html" title="Chapter 74. System Catalog Declarations and Initial Contents">Up</a></td><th width="60%" align="center">Chapter 74. System Catalog Declarations and Initial Contents</th><td width="10%" align="right"><a accesskey="h" href="index.html" title="PostgreSQL 15.5 Documentation">Home</a></td><td width="10%" align="right"> <a accesskey="n" href="bki-commands.html" title="74.4. BKI Commands">Next</a></td></tr></table><hr /></div><div class="sect1" id="BKI-FORMAT"><div class="titlepage"><div><div><h2 class="title" style="clear: both">74.3. <acronym class="acronym">BKI</acronym> File Format</h2></div></div></div><p>
This section describes how the <span class="productname">PostgreSQL</span>
backend interprets <acronym class="acronym">BKI</acronym> files. This description
will be easier to understand if the <code class="filename">postgres.bki</code>
file is at hand as an example.
</p><p>
<acronym class="acronym">BKI</acronym> input consists of a sequence of commands. Commands are made up
of a number of tokens, depending on the syntax of the command.
Tokens are usually separated by whitespace, but need not be if
there is no ambiguity. There is no special command separator; the
next token that syntactically cannot belong to the preceding
command starts a new one. (Usually you would put a new command on
a new line, for clarity.) Tokens can be certain key words, special
characters (parentheses, commas, etc.), identifiers, numbers, or
single-quoted strings. Everything is case sensitive.
</p><p>
Lines starting with <code class="literal">#</code> are ignored.
</p></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="system-catalog-initial-data.html" title="74.2. System Catalog Initial Data">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="bki.html" title="Chapter 74. System Catalog Declarations and Initial Contents">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="bki-commands.html" title="74.4. BKI Commands">Next</a></td></tr><tr><td width="40%" align="left" valign="top">74.2. System Catalog Initial Data </td><td width="20%" align="center"><a accesskey="h" href="index.html" title="PostgreSQL 15.5 Documentation">Home</a></td><td width="40%" align="right" valign="top"> 74.4. <acronym class="acronym">BKI</acronym> Commands</td></tr></table></div></body></html>
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