Comment by dan.mccreary:
For the eXist native XML database you will need to modify the
mime-types.xml file and add the following lines:
<!-- Additions for SVG Web -->
<mime-type name="text/x-component" type="binary">
<description>HTC File for SVGWeb</description>
<extensions>.htc</extensions>
</mime-type>
<mime-type name="application/x-shockwave-flash" type="binary">
<description>Adobe Shockwave File</description>
<extensions>.swf</extensions>
</mime-type>
For more information:
http://code.google.com/p/svgweb/wiki/ChangingServerMIMEType