--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Symbian3/SDK/Source/GUID-12CB6E0E-69CD-51A6-8966-3621CB26E1CD.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-12CB6E0E-69CD-51A6-8966-3621CB26E1CD" xml:lang="en"><title>DBMS
+rowsets overview</title><shortdesc>DBMS rowsets allow data contained in a database to be retrieved,
+searched, and modified.</shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>
+<section id="GUID-33E7933A-C5A2-4159-8858-422C60E57BDA"><title>Description</title> <p>The API has three key concepts: rowset
+base, table rowset, and SQL view. </p> <p><b>Rowset
+base</b> </p> <p>Rowsets provide the following:</p> <ul>
+<li id="GUID-5EC6A9C9-2C0F-5141-A600-815C61FA5DC8"><p>retrieving data from
+a database</p> </li>
+<li id="GUID-145F724B-4AFF-5987-9DC1-C94D5FE9C54C"><p>navigating the rowset
+with a cursor</p> </li>
+<li id="GUID-BD487F4B-D14F-5575-95BB-2A1A5ECBC020"><p>row finding and matching </p> </li>
+<li id="GUID-56F7E17F-3009-5E2C-A015-CF09D03C98F1"><p>updating or inserting
+rows</p> </li>
+<li id="GUID-FE9D6B32-74CE-54C7-8DBB-C7578673282F"><p>getting the schema of
+the rows within the rowset</p> </li>
+<li id="GUID-FA52E8CD-8943-560F-8613-BF7D0E6A05A8"><p>extracting and setting
+columns in a row</p> </li>
+</ul> <p>A base class is defined for all rowset types by <xref href="GUID-F861EB8F-F621-3E77-8F9A-5E4EFC4E9C2F.dita"><apiname>RDbRowSet</apiname></xref>.
+Concrete types of rowset derive from this.</p> <p><b>Table rowset</b> </p> <p>This provides all the rows and columns of a table
+as a rowset. Indexes can be used to order the rowset, and to provide fast
+key-based row retrieval from the table. It is encapsulated in <xref href="GUID-90ABFA73-6374-367C-BAA9-88CD810035CC.dita"><apiname>RDbTable</apiname></xref>. </p> <p><b>SQL view</b> </p> <p>This provides a rowset based on an SQL query. It
+is provided by <xref href="GUID-AE1BEF00-5AA7-3F03-95B0-9E40395EDA6C.dita"><apiname>RDbView</apiname></xref>. An SQL query is encapsulated in <xref href="GUID-A7C9FEFA-A9A9-357F-AF66-FA3A288AF925.dita"><apiname>TDbQuery</apiname></xref>.</p> <p>For
+large rowsets, it can be useful to define the balance between memory usage
+(greatest if the view stores the complete rowset) and speed (slowest if the
+rowset is evaluated for each cursor navigation). This is called the pre-evaluation
+window, and is provided by <xref href="GUID-E53A90DF-3589-34BD-B7C3-02371567AF41.dita"><apiname>TDbWindow</apiname></xref>.</p> </section>
+</conbody></concept>
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