as an existing
component or configuration, the existing one will be replaced silently.
<br/><br/>
The following is the configuration for two components:
<pre>
array(
    'db'=&gt;array(
        'class'=&gt;'CDbConnection',
        'connectionString'=&gt;'sqlite:path/to/file.db',
    ),
    'cache'=&gt;array(
        'class'=&gt;'CDbCache',
        'connectionID'=&gt;'db',
        'enabled'=&gt;!YII_DEBUG,  // enable caching in non-debug mode
    ),
)
</pre></p>


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