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>Preface</TITLE
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>Preface</H1
><DIV
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><DL
><DT
><B
>Table of Contents</B
></DT
><DT
><A
HREF="intro-whatis.html"
>What is <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
>?</A
></DT
><DT
><A
HREF="history.html"
>A Brief History of <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
></A
></DT
><DT
><A
HREF="notation.html"
>Conventions</A
></DT
><DT
><A
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>Further Information</A
></DT
><DT
><A
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>Bug Reporting Guidelines</A
></DT
></DL
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><P
> This book is the official documentation of
<SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
>. It has been written by the
<SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
> developers and other
volunteers in parallel to the development of the
<SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
> software. It describes all
the functionality that the current version of
<SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
> officially supports.
</P
><P
> To make the large amount of information about
<SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
> manageable, this book has been
organized in several parts. Each part is targeted at a different
class of users, or at users in different stages of their
<SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
> experience:
<P
></P
></P><UL
><LI
><P
> <A
HREF="tutorial.html"
>Part I</A
> is an informal introduction for new users.
</P
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><LI
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> <A
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>Part II</A
> documents the <ACRONYM
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>SQL</ACRONYM
> query
language environment, including data types and functions, as well
as user-level performance tuning. Every
<SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
> user should read this.
</P
></LI
><LI
><P
> <A
HREF="admin.html"
>Part III</A
> describes the installation and
administration of the server. Everyone who runs a
<SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
> server, be it for private
use or for others, should read this part.
</P
></LI
><LI
><P
> <A
HREF="client-interfaces.html"
>Part IV</A
> describes the programming
interfaces for <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
> client
programs.
</P
></LI
><LI
><P
> <A
HREF="server-programming.html"
>Part V</A
> contains information for
advanced users about the extensibility capabilities of the
server. Topics include user-defined data types and
functions.
</P
></LI
><LI
><P
> <A
HREF="reference.html"
>Part VI</A
> contains reference information about
SQL commands, client and server programs. This part supports
the other parts with structured information sorted by command or
program.
</P
></LI
><LI
><P
> <A
HREF="internals.html"
>Part VII</A
> contains assorted information that might be of
use to <SPAN
CLASS="PRODUCTNAME"
>PostgreSQL</SPAN
> developers.
</P
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