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1 <?xml version="1.0" encoding="utf-8"?> |
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2 <!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. --> |
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3 <!-- This component and the accompanying materials are made available under the terms of the License |
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4 "Eclipse Public License v1.0" which accompanies this distribution, |
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5 and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". --> |
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6 <!-- Initial Contributors: |
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7 Nokia Corporation - initial contribution. |
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8 Contributors: |
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9 --> |
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10 <!DOCTYPE concept |
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11 PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd"> |
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12 <concept xml:lang="en" id="GUID-39897348-B27A-5C02-B65C-C26D122BCAE4"><title>Tables</title><prolog><metadata><keywords/></metadata></prolog><conbody><p>Two classes and a template class are used to manipulate tables in the database.</p> <p>The <codeph>RDbTable</codeph> class is used to manipulate a named table in the database, providing access to the data as a rowset. A named index can be used to order the rowset, and to provide fast key-based row retrieval from the table.</p> <p>The <codeph>TDbSeekKey</codeph> class is used to pass a key value to <codeph>RDbTable::SeekL()</codeph>, for lookup in the currently active index on that rowset. It can store a key value of any type. </p> <p><codeph>TDbSeekKey</codeph> can only hold a single-column key. Use the <codeph>TDbSeekMultiKey<TInt S></codeph> templated class to allow multi-column indexes to be searched using multi-column key values. The template parameter <codeph>S</codeph> specifies the maximum number of column values that can be added to the key value.</p> </conbody></concept> |