<refentry id="bibliography.collection">
<refmeta>
<refentrytitle>bibliography.collection</refentrytitle>
<refmiscinfo role="type">string</refmiscinfo>
</refmeta>
<refnamediv>
<refname>bibliography.collection</refname>
<refpurpose>Name of the bibliography collection file</refpurpose>
</refnamediv>

<refsynopsisdiv>
<src:fragment id='bibliography.collection.frag'><xsl:param name="bibliography.collection" select="'http://docbook.sourceforge.net/release/bibliography/bibliography.xml'"/></src:fragment>
</refsynopsisdiv>

<refsect1><title>Description</title>

<para>Maintaining bibliography entries across a set of documents is tedious, time
consuming, and error prone. It makes much more sense, usually, to store all of
the bibliography entries in a single place and simply <quote>extract</quote>
the ones you need in each document.</para>

<para>That's the purpose of the
<parameter>bibliography.collection</parameter> parameter. To setup a global
bibliography <quote>database</quote>, follow these steps:</para>

<para>First, create a stand-alone bibliography document that contains all of
the documents that you wish to reference. Make sure that each bibliography
entry (whether you use <sgmltag>biblioentry</sgmltag> or <sgmltag>bibliomixed</sgmltag>)
has an ID.</para>

<para>My global bibliography, <filename>~/bibliography.xml</filename> begins
like this:</para>

<informalexample>
<programlisting><![CDATA[<!DOCTYPE bibliography
  PUBLIC "-//OASIS//DTD DocBook XML V4.1.2//EN"
  "http://www.oasis-open.org/docbook/xml/4.1.2/docbookx.dtd">
<bibliography><title>References</title>

<bibliomixed id="xml-rec"><abbrev>XML 1.0</abbrev>Tim Bray,
Jean Paoli, C. M. Sperberg-McQueen, and Eve Maler, editors.
<citetitle><ulink url="http://www.w3.org/TR/REC-xml">Extensible Markup
Language (XML) 1.0 Second Edition</ulink></citetitle>.
World Wide Web Consortium, 2000.
</bibliomixed>

<bibliomixed id="xml-names"><abbrev>Namespaces</abbrev>Tim Bray,
Dave Hollander,
and Andrew Layman, editors.
<citetitle><ulink url="http://www.w3.org/TR/REC-xml-names/">Namespaces in
XML</ulink></citetitle>.
World Wide Web Consortium, 1999.
</bibliomixed>

<!-- ... -->
</bibliography>
]]></programlisting>
</informalexample>

<para>When you create a bibliography in your document, simply
provide <emphasis>empty</emphasis> <sgmltag>bibliomixed</sgmltag>
entries for each document that you wish to cite. Make sure that these
elements have the same ID as the corresponding <quote>real</quote>
entry in your global bibliography.</para>

<para>For example:</para>

<informalexample>
<programlisting><![CDATA[<bibliography><title>Bibliography</title>

<bibliomixed id="xml-rec"/>
<bibliomixed id="xml-names"/>
<bibliomixed id="DKnuth86">Donald E. Knuth. <citetitle>Computers and
Typesetting: Volume B, TeX: The Program</citetitle>. Addison-Wesley,
1986.  ISBN 0-201-13437-3.
</bibliomixed>
<bibliomixed id="relaxng"/>

</bibliography>]]></programlisting>
</informalexample>

<para>Note that it's perfectly acceptable to mix entries from your
global bibliography with <quote>normal</quote> entries. You can use
<sgmltag>xref</sgmltag> or other elements to cross-reference your
bibliography entries in exactly the same way you do now.</para>

<para>Finally, when you are ready to format your document, simply set the
<parameter>bibliography.collection</parameter> parameter (in either a
customization layer or directly through your processor's interface) to
point to your global bibliography.</para>

<para>The stylesheets will format the bibliography in your document as if
all of the entries referenced appeared there literally.</para>

</refsect1>
</refentry>
