--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Symbian3/SDK/Source/GUID-118C8F84-2BB3-5F60-B6AB-22F0F1B3349E.dita	Thu Jan 21 18:18:20 2010 +0000
@@ -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-118C8F84-2BB3-5F60-B6AB-22F0F1B3349E"><title>Types of rowset</title><prolog><metadata><keywords/></metadata></prolog><conbody><p>Database application programs use a <keyword>rowset</keyword>, which maintains a <keyword>cursor</keyword> on a current row within that set. The rowset provides an abstract interface, two types are provided:</p> <ul><li id="GUID-87C3A645-D3F9-5D16-8B4C-CA3FE80AA7D3"><p>a table is an entire table in a database. Row ordering is either undefined, or by one of the table’s indexes. Fast key-based retrieval using an index can be performed on a table. The table is encapsulated in the derived class <codeph>RDbTable</codeph>.</p> </li> <li id="GUID-BC628D8C-BCC4-50AF-B1E3-93428CDB8506"><p>an SQL view is a rowset generated by an <keyword>SQL</keyword> query on a database, currently restricted to a single table. Cursor navigation is implemented by evaluating the view as necessary. Since evaluation may be expensive, a pre-evaluation window may be specified, allowing the rowset to be evaluated once and navigated quickly. The desired window is described by the <codeph>TDbWindow</codeph> class. Rowsets can also be evaluated in steps. The SQL view is encapsulated in the derived class <codeph>RDbView</codeph>. </p> </li> </ul> </conbody></concept>
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