2011-09-13 17:44:24 +00:00
|
|
|
|
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
|
|
|
|
|
|
<!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>Chapter 1. Introduction</title>
|
|
|
|
|
|
<link rel="stylesheet" href="gettingStarted.css" type="text/css" />
|
|
|
|
|
|
<meta name="generator" content="DocBook XSL Stylesheets V1.73.2" />
|
|
|
|
|
|
<link rel="start" href="index.html" title="Berkeley DB Programmer's Reference Guide" />
|
|
|
|
|
|
<link rel="up" href="index.html" title="Berkeley DB Programmer's Reference Guide" />
|
|
|
|
|
|
<link rel="prev" href="moreinfo.html" title="For More Information" />
|
|
|
|
|
|
<link rel="next" href="intro_terrain.html" title="Mapping the terrain: theory and practice" />
|
|
|
|
|
|
</head>
|
|
|
|
|
|
<body>
|
|
|
|
|
|
<div xmlns="" class="navheader">
|
|
|
|
|
|
<div class="libver">
|
2012-11-14 21:35:20 +00:00
|
|
|
|
<p>Library Version 11.2.5.3</p>
|
2011-09-13 17:44:24 +00:00
|
|
|
|
</div>
|
|
|
|
|
|
<table width="100%" summary="Navigation header">
|
|
|
|
|
|
<tr>
|
|
|
|
|
|
<th colspan="3" align="center">Chapter 1.
|
|
|
|
|
|
Introduction
|
|
|
|
|
|
</th>
|
|
|
|
|
|
</tr>
|
|
|
|
|
|
<tr>
|
|
|
|
|
|
<td width="20%" align="left"><a accesskey="p" href="moreinfo.html">Prev</a> </td>
|
|
|
|
|
|
<th width="60%" align="center"> </th>
|
|
|
|
|
|
<td width="20%" align="right"> <a accesskey="n" href="intro_terrain.html">Next</a></td>
|
|
|
|
|
|
</tr>
|
|
|
|
|
|
</table>
|
|
|
|
|
|
<hr />
|
|
|
|
|
|
</div>
|
|
|
|
|
|
<div class="chapter" lang="en" xml:lang="en">
|
|
|
|
|
|
<div class="titlepage">
|
|
|
|
|
|
<div>
|
|
|
|
|
|
<div>
|
|
|
|
|
|
<h2 class="title"><a id="intro"></a>Chapter 1.
|
|
|
|
|
|
Introduction
|
|
|
|
|
|
</h2>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
<div class="toc">
|
|
|
|
|
|
<p>
|
|
|
|
|
|
<b>Table of Contents</b>
|
|
|
|
|
|
</p>
|
|
|
|
|
|
<dl>
|
|
|
|
|
|
<dt>
|
|
|
|
|
|
<span class="sect1">
|
|
|
|
|
|
<a href="intro.html#intro_data">An introduction to data management</a>
|
|
|
|
|
|
</span>
|
|
|
|
|
|
</dt>
|
|
|
|
|
|
<dt>
|
|
|
|
|
|
<span class="sect1">
|
|
|
|
|
|
<a href="intro_terrain.html">Mapping the terrain: theory and practice</a>
|
|
|
|
|
|
</span>
|
|
|
|
|
|
</dt>
|
|
|
|
|
|
<dd>
|
|
|
|
|
|
<dl>
|
|
|
|
|
|
<dt>
|
|
|
|
|
|
<span class="sect2">
|
2012-11-14 21:35:20 +00:00
|
|
|
|
<a href="intro_terrain.html#idm1895840">Data access and data management</a>
|
2011-09-13 17:44:24 +00:00
|
|
|
|
</span>
|
|
|
|
|
|
</dt>
|
|
|
|
|
|
<dt>
|
|
|
|
|
|
<span class="sect2">
|
2012-11-14 21:35:20 +00:00
|
|
|
|
<a href="intro_terrain.html#idm2229408">Relational databases</a>
|
2011-09-13 17:44:24 +00:00
|
|
|
|
</span>
|
|
|
|
|
|
</dt>
|
|
|
|
|
|
<dt>
|
|
|
|
|
|
<span class="sect2">
|
2012-11-14 21:35:20 +00:00
|
|
|
|
<a href="intro_terrain.html#idm2389408">Object-oriented databases</a>
|
2011-09-13 17:44:24 +00:00
|
|
|
|
</span>
|
|
|
|
|
|
</dt>
|
|
|
|
|
|
<dt>
|
|
|
|
|
|
<span class="sect2">
|
2012-11-14 21:35:20 +00:00
|
|
|
|
<a href="intro_terrain.html#idm2511776">Network databases</a>
|
2011-09-13 17:44:24 +00:00
|
|
|
|
</span>
|
|
|
|
|
|
</dt>
|
|
|
|
|
|
<dt>
|
|
|
|
|
|
<span class="sect2">
|
2012-11-14 21:35:20 +00:00
|
|
|
|
<a href="intro_terrain.html#idm1916248">Clients and servers</a>
|
2011-09-13 17:44:24 +00:00
|
|
|
|
</span>
|
|
|
|
|
|
</dt>
|
|
|
|
|
|
</dl>
|
|
|
|
|
|
</dd>
|
|
|
|
|
|
<dt>
|
|
|
|
|
|
<span class="sect1">
|
|
|
|
|
|
<a href="intro_dbis.html">What is Berkeley DB?</a>
|
|
|
|
|
|
</span>
|
|
|
|
|
|
</dt>
|
|
|
|
|
|
<dd>
|
|
|
|
|
|
<dl>
|
|
|
|
|
|
<dt>
|
|
|
|
|
|
<span class="sect2">
|
2012-11-14 21:35:20 +00:00
|
|
|
|
<a href="intro_dbis.html#idm1665072">Data Access Services</a>
|
2011-09-13 17:44:24 +00:00
|
|
|
|
</span>
|
|
|
|
|
|
</dt>
|
|
|
|
|
|
<dt>
|
|
|
|
|
|
<span class="sect2">
|
2012-11-14 21:35:20 +00:00
|
|
|
|
<a href="intro_dbis.html#idm1554168">Data management services</a>
|
2011-09-13 17:44:24 +00:00
|
|
|
|
</span>
|
|
|
|
|
|
</dt>
|
|
|
|
|
|
<dt>
|
|
|
|
|
|
<span class="sect2">
|
2012-11-14 21:35:20 +00:00
|
|
|
|
<a href="intro_dbis.html#idm157888">Design</a>
|
2011-09-13 17:44:24 +00:00
|
|
|
|
</span>
|
|
|
|
|
|
</dt>
|
|
|
|
|
|
</dl>
|
|
|
|
|
|
</dd>
|
|
|
|
|
|
<dt>
|
|
|
|
|
|
<span class="sect1">
|
|
|
|
|
|
<a href="intro_dbisnot.html">What Berkeley DB is not</a>
|
|
|
|
|
|
</span>
|
|
|
|
|
|
</dt>
|
|
|
|
|
|
<dd>
|
|
|
|
|
|
<dl>
|
|
|
|
|
|
<dt>
|
|
|
|
|
|
<span class="sect2">
|
2012-11-14 21:35:20 +00:00
|
|
|
|
<a href="intro_dbisnot.html#idm1802280">Berkeley DB is not a relational database</a>
|
2011-09-13 17:44:24 +00:00
|
|
|
|
</span>
|
|
|
|
|
|
</dt>
|
|
|
|
|
|
<dt>
|
|
|
|
|
|
<span class="sect2">
|
2012-11-14 21:35:20 +00:00
|
|
|
|
<a href="intro_dbisnot.html#idm2288920">Berkeley DB is not an object-oriented database</a>
|
2011-09-13 17:44:24 +00:00
|
|
|
|
</span>
|
|
|
|
|
|
</dt>
|
|
|
|
|
|
<dt>
|
|
|
|
|
|
<span class="sect2">
|
2012-11-14 21:35:20 +00:00
|
|
|
|
<a href="intro_dbisnot.html#idm2354536">Berkeley DB is not a network database</a>
|
2011-09-13 17:44:24 +00:00
|
|
|
|
</span>
|
|
|
|
|
|
</dt>
|
|
|
|
|
|
<dt>
|
|
|
|
|
|
<span class="sect2">
|
2012-11-14 21:35:20 +00:00
|
|
|
|
<a href="intro_dbisnot.html#idm2301256">Berkeley DB is not a database server</a>
|
2011-09-13 17:44:24 +00:00
|
|
|
|
</span>
|
|
|
|
|
|
</dt>
|
|
|
|
|
|
</dl>
|
|
|
|
|
|
</dd>
|
|
|
|
|
|
<dt>
|
|
|
|
|
|
<span class="sect1">
|
|
|
|
|
|
<a href="intro_need.html">Do you need Berkeley DB?</a>
|
|
|
|
|
|
</span>
|
|
|
|
|
|
</dt>
|
|
|
|
|
|
<dt>
|
|
|
|
|
|
<span class="sect1">
|
|
|
|
|
|
<a href="intro_what.html">What other services does Berkeley DB provide?</a>
|
|
|
|
|
|
</span>
|
|
|
|
|
|
</dt>
|
|
|
|
|
|
<dt>
|
|
|
|
|
|
<span class="sect1">
|
|
|
|
|
|
<a href="intro_distrib.html">What does the Berkeley DB distribution include?</a>
|
|
|
|
|
|
</span>
|
|
|
|
|
|
</dt>
|
|
|
|
|
|
<dt>
|
|
|
|
|
|
<span class="sect1">
|
|
|
|
|
|
<a href="intro_where.html">Where does Berkeley DB run?</a>
|
|
|
|
|
|
</span>
|
|
|
|
|
|
</dt>
|
|
|
|
|
|
<dt>
|
|
|
|
|
|
<span class="sect1">
|
|
|
|
|
|
<a href="intro_products.html">The Berkeley DB products</a>
|
|
|
|
|
|
</span>
|
|
|
|
|
|
</dt>
|
|
|
|
|
|
<dd>
|
|
|
|
|
|
<dl>
|
|
|
|
|
|
<dt>
|
|
|
|
|
|
<span class="sect2">
|
2012-11-14 21:35:20 +00:00
|
|
|
|
<a href="intro_products.html#idm2240216">Berkeley DB Data Store</a>
|
2011-09-13 17:44:24 +00:00
|
|
|
|
</span>
|
|
|
|
|
|
</dt>
|
|
|
|
|
|
<dt>
|
|
|
|
|
|
<span class="sect2">
|
2012-11-14 21:35:20 +00:00
|
|
|
|
<a href="intro_products.html#idm1817232">Berkeley DB Concurrent Data Store</a>
|
2011-09-13 17:44:24 +00:00
|
|
|
|
</span>
|
|
|
|
|
|
</dt>
|
|
|
|
|
|
<dt>
|
|
|
|
|
|
<span class="sect2">
|
2012-11-14 21:35:20 +00:00
|
|
|
|
<a href="intro_products.html#idm1869736">Berkeley DB Transactional Data Store</a>
|
2011-09-13 17:44:24 +00:00
|
|
|
|
</span>
|
|
|
|
|
|
</dt>
|
|
|
|
|
|
<dt>
|
|
|
|
|
|
<span class="sect2">
|
2012-11-14 21:35:20 +00:00
|
|
|
|
<a href="intro_products.html#idm1577368">Berkeley DB High Availability</a>
|
2011-09-13 17:44:24 +00:00
|
|
|
|
</span>
|
|
|
|
|
|
</dt>
|
|
|
|
|
|
</dl>
|
|
|
|
|
|
</dd>
|
|
|
|
|
|
</dl>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
<div class="sect1" lang="en" xml:lang="en">
|
|
|
|
|
|
<div class="titlepage">
|
|
|
|
|
|
<div>
|
|
|
|
|
|
<div>
|
|
|
|
|
|
<h2 class="title" style="clear: both"><a id="intro_data"></a>An introduction to data management</h2>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
<p>Cheap, powerful computing and networking have created countless new
|
|
|
|
|
|
applications that could not have existed a decade ago. The advent of the
|
|
|
|
|
|
World-Wide Web, and its influence in driving the Internet into homes and
|
|
|
|
|
|
businesses, is one obvious example. Equally important, though, is the
|
|
|
|
|
|
shift from large, general-purpose desktop and server computers toward
|
|
|
|
|
|
smaller, special-purpose devices with built-in processing and
|
|
|
|
|
|
communications services.</p>
|
|
|
|
|
|
<p>As computer hardware has spread into virtually every corner of our
|
|
|
|
|
|
lives, of course, software has followed. Software developers today are
|
|
|
|
|
|
building applications not just for conventional desktop and server
|
|
|
|
|
|
environments, but also for handheld computers, home appliances,
|
|
|
|
|
|
networking hardware, cars and trucks, factory floor automation systems,
|
|
|
|
|
|
cellphones, and more.</p>
|
|
|
|
|
|
<p>While these operating environments are diverse, the problems that
|
|
|
|
|
|
software engineers must solve in them are often strikingly similar. Most
|
|
|
|
|
|
systems must deal with the outside world, whether that means
|
|
|
|
|
|
communicating with users or controlling machinery. As a result, most
|
|
|
|
|
|
need some sort of I/O system. Even a simple, single-function system
|
|
|
|
|
|
generally needs to handle multiple tasks, and so needs some kind of
|
|
|
|
|
|
operating system to schedule and manage control threads. Also, many
|
|
|
|
|
|
computer systems must store and retrieve data to track history, record
|
|
|
|
|
|
configuration settings, or manage access.</p>
|
|
|
|
|
|
<p>Data management can be very simple. In some cases, just recording
|
|
|
|
|
|
configuration in a flat text file is enough. More often, though,
|
|
|
|
|
|
programs need to store and search a large amount of data, or
|
|
|
|
|
|
structurally complex data. Database management systems are tools that
|
|
|
|
|
|
programmers can use to do this work quickly and efficiently using
|
|
|
|
|
|
off-the-shelf software.</p>
|
|
|
|
|
|
<p>Of course, database management systems have been around for a long time.
|
|
|
|
|
|
Data storage is a problem dating back to the earliest days of computing.
|
|
|
|
|
|
Software developers can choose from hundreds of good,
|
|
|
|
|
|
commercially-available database systems. The problem is selecting the
|
|
|
|
|
|
one that best solves the problems that their applications face.</p>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
<div class="navfooter">
|
|
|
|
|
|
<hr />
|
|
|
|
|
|
<table width="100%" summary="Navigation footer">
|
|
|
|
|
|
<tr>
|
|
|
|
|
|
<td width="40%" align="left"><a accesskey="p" href="moreinfo.html">Prev</a> </td>
|
|
|
|
|
|
<td width="20%" align="center"> </td>
|
|
|
|
|
|
<td width="40%" align="right"> <a accesskey="n" href="intro_terrain.html">Next</a></td>
|
|
|
|
|
|
</tr>
|
|
|
|
|
|
<tr>
|
|
|
|
|
|
<td width="40%" align="left" valign="top">For More Information </td>
|
|
|
|
|
|
<td width="20%" align="center">
|
|
|
|
|
|
<a accesskey="h" href="index.html">Home</a>
|
|
|
|
|
|
</td>
|
|
|
|
|
|
<td width="40%" align="right" valign="top"> Mapping the terrain: theory and practice</td>
|
|
|
|
|
|
</tr>
|
|
|
|
|
|
</table>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
</body>
|
|
|
|
|
|
</html>
|
