--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Symbian3/SDK/Source/GUID-983C5DB9-85EF-541E-B494-19E3E617914A.dita	Wed Mar 31 11:11:55 2010 +0100
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+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->
+<!-- This component and the accompanying materials are made available under the terms of the License 
+"Eclipse Public License v1.0" which accompanies this distribution, 
+and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". -->
+<!-- Initial Contributors:
+    Nokia Corporation - initial contribution.
+Contributors: 
+-->
+<!DOCTYPE concept
+  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
+<concept id="GUID-983C5DB9-85EF-541E-B494-19E3E617914A" xml:lang="en"><title>Introduction
+to embedded stores </title><shortdesc>Data contained in a stream can represent a store in its own right
+rather than just objects. Such a store is known as an embedded store.</shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>
+<p>The stream containing the embedded store is known as the host stream.</p>
+<p>It is often convenient, and sometimes necessary, to collect the streams
+representing a partial object network into an embedded store. This makes it
+easier for the streams representing such a partial object network to be deleted,
+by deleting (from the top level store) the stream containing the embedded
+store.</p>
+<p> The alternative is to traverse the individual streams representing the
+partial object network and deleting them in the correct sequence; this can
+be difficult.</p>
+<p>The following diagram shows the idea:</p>
+<fig id="GUID-612A6C2C-D706-50BB-A6C4-F2B5639685F8">
+<title>Embedded store within stream</title>
+<image href="GUID-8B1C7778-0C6D-5DEE-90FD-3B016EC0E3CE_d0e361437_href.png" placement="inline"/>
+</fig>
+<p>An embedded store can contain an arbitrarily complex network of streams.
+As well as being easy to delete, this stream network can also be copied by
+simply copying the host stream from the containing store.</p>
+<p>Embedded stores are persistent stores.</p>
+<p>The embedded store is constructed on a write stream in its containing store
+and, for writing, the embedded store behaves like a direct file store — once
+streams within the embedded store have been committed and closed, they cannot
+subsequently be changed, i.e. streams cannot be replaced, deleted, extended
+or changed in any way.</p>
+<p>Embedded stores are used for object embedding by the application architecture.
+Because the embedded store behaves like a direct file store, only document
+types with direct representations can be embedded. In particular, documents
+using permanent-type stores, such as the database or the agenda, cannot be
+embedded. Such documents may, however, contain any type of embeddable document.</p>
+<section id="GUID-72E3A832-7DE7-41F0-B021-BC37C6BB40DF"><title>See also</title> <p><xref href="GUID-C9D8D913-C65F-5A69-A606-30F59BFB38E2.dita">File stores</xref> </p> <p><xref href="GUID-B683496C-652E-5F48-924E-52D2FF3A78A7.dita">Direct file store</xref> </p> </section>
+</conbody></concept>
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