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Update, polish, consistencify preface/intro sections.

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Peter Eisentraut
2001-02-03 19:03:27 +00:00
parent 80dbae395d
commit 7c164dca0b
19 changed files with 364 additions and 625 deletions
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doc/src/sgml/intro.sgml
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@@ -1,33 +1,39 @@
<!--
$Header: /cvsroot/pgsql/doc/src/sgml/intro.sgml,v 1.13 2001/01/13 23:58:55 petere Exp $
$Header: /cvsroot/pgsql/doc/src/sgml/intro.sgml,v 1.14 2001/02/03 19:03:27 petere Exp $
-->
<chapter id="intro">
<title>Introduction</title>
<para>
This document is the user manual for the
<ulink url="http://postgresql.org/"><productname>PostgreSQL</productname></ulink>
database management system, originally developed at the University
of California at Berkeley.
<productname>PostgreSQL</productname> is based on
<ulink url="http://s2k-ftp.CS.Berkeley.EDU:8000/postgres/postgres.html">
<productname>Postgres release 4.2</productname></ulink>.
The <productname>Postgres</productname> project,
led by Professor Michael Stonebraker, was sponsored by the
Defense Advanced Research Projects Agency
(<acronym>DARPA</acronym>), the
Army Research Office (<acronym>ARO</acronym>), the National Science
Foundation (<acronym>NSF</acronym>), and ESL, Inc.
</para>
<preface id="preface">
<title>Preface</title>
<sect1 id="intro-whatis">
<title> What is <productname>Postgres</productname>?</title>
<title> What is <productname>PostgreSQL</productname>?</title>
<para>
<productname>PostgreSQL</productname> is an object-relational
database management system (<acronym>ORDBMS</acronym>) based on
<ulink url="http://s2k-ftp.CS.Berkeley.EDU:8000/postgres/postgres.html">
<productname>POSTGRES, Version 4.2</productname></ulink>,
developed at the University of California at Berkeley Computer
Science Department. The <productname>POSTGRES</productname>
project, led by Professor Michael Stonebraker, was sponsored by
the Defense Advanced Research Projects Agency
(<acronym>DARPA</acronym>), the Army Research Office
(<acronym>ARO</acronym>), the National Science Foundation
(<acronym>NSF</acronym>), and ESL, Inc.
</para>
<para>
<productname>PostgreSQL</productname> is an open-source descendant of
this original Berkeley code. It provides SQL92/SQL99 language support
and other modern features.
</para>
<para>
<productname>POSTGRES</productname> pioneered many of the
object-relational concepts now becoming available in some commercial
databases.
Traditional relational database management systems
(DBMSs) support a data model consisting of a collection
(<acronym>RDBMS</acronym>) support a data model consisting of a collection
of named relations, containing attributes of a specific
type. In current commercial systems, possible types
include floating point numbers, integers, character
@@ -35,18 +41,17 @@ $Header: /cvsroot/pgsql/doc/src/sgml/intro.sgml,v 1.13 2001/01/13 23:58:55 peter
that this model is inadequate for future data
processing applications.
The relational model successfully replaced previous
models in part because of its "Spartan simplicity".
models in part because of its <quote>Spartan simplicity</quote>.
However, as mentioned, this simplicity often makes the
implementation of certain applications very difficult.
<productname>Postgres</productname> offers substantial additional
power by incorporating the following four additional
basic concepts in such a way that users can easily
power by incorporating the following additional
concepts in such a way that users can easily
extend the system:
<simplelist>
<member>tables</member>
<member>inheritance</member>
<member>types</member>
<member>data types</member>
<member>functions</member>
</simplelist>
</para>
@@ -78,14 +83,12 @@ $Header: /cvsroot/pgsql/doc/src/sgml/intro.sgml,v 1.13 2001/01/13 23:58:55 peter
</sect1>
&history;
&about;
&info;
&notation;
&problems;
&y2k;
&legal;
</chapter>
</preface>
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