--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Symbian3/SDK/Source/GUID-62E1A29B-E95C-5E5B-969B-410A78114A3B.dita	Tue Jul 20 12:00:49 2010 +0100
@@ -0,0 +1,12 @@
+<?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 xml:lang="en" id="GUID-62E1A29B-E95C-5E5B-969B-410A78114A3B"><title>Dynamic Compression</title><prolog><metadata><keywords/></metadata></prolog><conbody><section id="GUID-83A2D02E-143D-50AA-B26A-AAC3CAD72CD0"><title>Overview</title> <p>A contacts database will be compressed automatically by the server based on two compression thresholds. </p> <p>These thresholds are expressed in terms of the total number of Create, Update or Delete (CUD) operations performed on a contacts database since the last time the database was compressed. </p> <p>The first threshold is 16 CUD operations. Once this threshold is reached the server will request an “idle” compression. This type of compression will only result in a compression request (internal to the server) if there are no operations of higher priority carried out by the server within 1 second. </p> <p>The second threshold is 64 CUD operations. Once this threshold is reached the server will request an “immediate” compression. This type of compression will always result in a compression request. </p> </section> <section id="GUID-34843419-5945-5EE5-B3C0-2181D5A097CB"><title>Implementation Considerations</title> <p>Clients should still request database compression since short sessions with a database may not allow either of the CUD operation thresholds to be reached. </p> <p>There is no requirement to request compression during “bulk” operations (more than 64 CUD operations) but it is recommended to request a compression after any series of CUD operations, to ensure minimum fragmentation of the database. </p> </section> </conbody></concept>
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