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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>General features</title><link rel="stylesheet" type="text/css" href="manual.css" /><meta name="generator" content="DocBook XSL Stylesheets V1.78.1" /><link rel="home" href="index.html" title="RefDB handbook" /><link rel="up" href="ch01.html" title="Chapter 1. Introduction" /><link rel="prev" href="ch01s02.html" title="Who should use RefDB?" /><link rel="next" href="ch01s04.html" title="Interfaces" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">General features</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="ch01s02.html">Prev</a> </td><th width="60%" align="center">Chapter 1. Introduction</th><td width="20%" align="right"> <a accesskey="n" href="ch01s04.html">Next</a></td></tr></table><hr /></div><div class="sect1"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="idp66196512"></a>General features</h2></div></div></div><div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; "><li class="listitem"><p>RefDB uses a three-tier architecture (see <a class="xref" href="ch01s03.html#figure-threetier" title="Figure 1.1. RefDB three-tier architecture">Figure 1.1, “RefDB three-tier architecture”</a>), consisting of clients on the workstation side, and an application server as well as the SQL database server on the server side.</p><div class="figure"><a id="figure-threetier"></a><p class="title"><strong>Figure 1.1. RefDB three-tier architecture</strong></p><div class="figure-contents"><div class="mediaobject"><img src="refdbmanualfig1.png" alt="RefDB three-tier architecture" /></div></div></div><br class="figure-break" /><p>Optionally you may use an internal database engine instead of the external SQL server, resulting in a simpler two-tier setup.</p></li><li class="listitem"><p>The data storage proper is done by a SQL database engine. Currently <a class="ulink" href="http://www.mysql.com" target="_top"><span class="application">MySQL</span></a> and <a class="ulink" href="http://www.postgresql.org" target="_top"><span class="application">PostgreSQL</span></a> are supported as external database engines. Additionally, an internal SQL engine based on <a class="ulink" href="http://www.sqlite.org" target="_top">SQLite</a> is available, which allows data storage in a single, operating-system and architecture-independent file without any administration overhead.</p></li><li class="listitem"><p>By default, incoming data are converted to UTF-8 and stored as such (see <a class="xref" href="ch01s03.html#figure-encodings" title="Figure 1.2. RefDB character encoding support">Figure 1.2, “RefDB character encoding support”</a>). Outgoing data can be converted to other character encodings if needed. However, RefDB can be set up in a very flexible manner to accommodate other character encoding requirements as long as they are supported by your operating system.</p><div class="figure"><a id="figure-encodings"></a><p class="title"><strong>Figure 1.2. RefDB character encoding support</strong></p><div class="figure-contents"><div class="mediaobject"><img src="refdbmanualfig5.png" alt="RefDB character encoding support" /></div></div></div><br class="figure-break" /></li><li class="listitem"><p>The server can run as a daemon in a non-privileged account if security concerns require this. Besides, users can start it as a standalone application on demand. As just about everything is configurable, a thoughtful setup will allow to run several copies of the server on the same box in parallel.</p></li></ul></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="ch01s02.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="ch01.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="ch01s04.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Who should use RefDB? </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> Interfaces</td></tr></table></div></body></html>
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