Clear Analysis Services database cache

How to clear cache of a cube

<ClearCache xmlns="http://schemas.microsoft.com/analysisservices/2003/engine">
<Object>
<DatabaseID>Adventure Works DW</DatabaseID>
<CubeID>Adventure Works DW</CubeID>
</Object>
</ClearCache>

How to clear cache of a Database

<ClearCache xmlns="http://schemas.microsoft.com/analysisservices/2003/engine">
<Object>
<DatabaseID>Adventure Works DW</DatabaseID>
</Object>
</ClearCache>