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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >BKI File Format</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK REV="MADE" HREF="mailto:pgsql-docs@postgresql.org"><LINK REL="HOME" TITLE="PostgreSQL 9.2.24 Documentation" HREF="index.html"><LINK REL="UP" TITLE="BKI Backend Interface" HREF="bki.html"><LINK REL="PREVIOUS" TITLE="BKI Backend Interface" HREF="bki.html"><LINK REL="NEXT" TITLE="BKI Commands" HREF="bki-commands.html"><LINK REL="STYLESHEET" TYPE="text/css" HREF="stylesheet.css"><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1"><META NAME="creation" CONTENT="2017-11-06T22:43:11"></HEAD ><BODY CLASS="SECT1" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="5" ALIGN="center" VALIGN="bottom" ><A HREF="index.html" >PostgreSQL 9.2.24 Documentation</A ></TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="top" ><A TITLE="BKI Backend Interface" HREF="bki.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="10%" ALIGN="left" VALIGN="top" ><A HREF="bki.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="60%" ALIGN="center" VALIGN="bottom" >Chapter 57. <ACRONYM CLASS="ACRONYM" >BKI</ACRONYM > Backend Interface</TD ><TD WIDTH="20%" ALIGN="right" VALIGN="top" ><A TITLE="BKI Commands" HREF="bki-commands.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="SECT1" ><H1 CLASS="SECT1" ><A NAME="BKI-FORMAT" >57.1. <ACRONYM CLASS="ACRONYM" >BKI</ACRONYM > File Format</A ></H1 ><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 <TT CLASS="FILENAME" >postgres.bki</TT > 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.), numbers, or double-quoted strings. Everything is case sensitive. </P ><P > Lines starting with <TT CLASS="LITERAL" >#</TT > are ignored. </P ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="bki.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="bki-commands.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><ACRONYM CLASS="ACRONYM" >BKI</ACRONYM > Backend Interface</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="bki.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><ACRONYM CLASS="ACRONYM" >BKI</ACRONYM > Commands</TD ></TR ></TABLE ></DIV ></BODY ></HTML >