<?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-9665C072-EA52-54B8-87A3-A7F818940DCD" xml:lang="en"><title>What

is the CommsDat API</title><shortdesc>This topic is an intrdouction to the CommsDat API. Tools and applications

use the CommsDat API to access the data in the Comms Database. </shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>

<p>The CommsDat DLL implements the CommsDat API. Symbian platform

loads the CommsDat DLL at boot time. Tools and applications do not load the

DLL. </p>

<p>The API made available by the CommsDat DLL is the only method that users

can use to access the data in the Comms Database. The API maps between client-side

representations of the data and the data stored in the database. </p>

<p>Tools and applications see the data as a set of tables. A table is a set

of records, where each record is an ordered set of fields. Each field holds

a specified piece of information. A field at a given position in a record

contains the same type of data in all records. You can consider that each

field at a given location in a record is in a column. A table can also be

called a record set. </p>

<fig id="GUID-5ABD88C0-67E4-5091-BE8F-56ABFED4FEC8">

</fig>

<p>Tables, records, columns and fields are all CommsDat elements. An element

is an item that can be stored in the Comms Database. </p>

<p>The CommsDat API gives tools and applications a set of classes to retrieve,

create and change the elements in the Comms Database. The API also gives the

functionality to access the Comms Database. </p>

<p> </p>

</conbody><related-links>

<link href="GUID-B89D2828-0FEE-5206-97D2-C7D4BBD35799.dita"><linktext>How is the

                Comms Database secured</linktext></link>

</related-links></concept>