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  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">

<concept id="GUID-1AFDDD6F-CB99-587D-A0B5-D3F5B27F7135" xml:lang="en"><title>Concepts</title><prolog><metadata><keywords/></metadata></prolog><conbody>

<p>This section describes the ideas that underly the Comms Database. </p>

<p>The Comms Database provides system wide storage for communications related

settings. The Comms Database holds information about Internet Access Providers

(IAPs), Internet Service Providers (ISPs), GPRS, modems, locations, charge-cards,

proxies, WAP settings etc. The Comms Database holds this information as a

set of related tables. </p>

<p>Symbian platform defines the format of this information, but the Comms

Database can also contain user-defined data. Symbian support for user-defined

data is limited to backup and security. </p>

<p>Tools and applications that manage voice and data transmissions use the

Comms Database. </p>

<p>The Comms Database is a persistent store. Tools and applications use the

CommsDat API to access the data in the Comms Database. The CommsDat API hides

the structure of the data on the database. The CommsDat API also hides the

implementation of the database, and allows the implementation to change in

future versions of Symbian platform without a change to client code. </p>

<p>The current version of Symbian platform implements the Comms

Database in the Central Repository. </p>

<p>The Comms Database is available on all Symbian platforms. </p>

<fig id="GUID-51EC89D3-B9BF-5074-95C7-8C8304626F6E">

<image href="GUID-DF83E798-408C-5E69-9520-A733DAEAB788_d0e79092_href.png" placement="inline"/>

</fig>

</conbody><related-links>

<link href="GUID-00696F18-F1C8-5810-A9F9-E7215CA451A4.dita"><linktext>Configuring

comms database using CED</linktext></link>

<link href="GUID-A0948145-32C3-5754-B76D-AD7A8AF001A2.dita"><linktext>Comms database

configuration file format</linktext></link>