Heres some stuff I saw recently - MBtiles uses sqlite<div><br></div><div><a href="http://mapbox.com/documentation/mbtiles-file-format">http://mapbox.com/documentation/mbtiles-file-format</a></div><div><a href="http://mapbox.com/documentation/mbtiles-file-format"></a><a href="http://developmentseed.org/blog/2010/oct/08/portable-map-tiles-format-released">http://developmentseed.org/blog/2010/oct/08/portable-map-tiles-format-released</a></div>

<div><a href="http://developmentseed.org/blog/2010/oct/08/portable-map-tiles-format-released"></a><a href="http://crschmidt.net/blog/archives/430/mbtiles-a-bit-of-a-rant/">http://crschmidt.net/blog/archives/430/mbtiles-a-bit-of-a-rant/</a></div>

<div><a href="http://crschmidt.net/blog/archives/430/mbtiles-a-bit-of-a-rant/"></a><a href="http://mapbox.com/tools">http://mapbox.com/tools</a></div><div><br></div><br><div class="gmail_quote">On Tue, Dec 21, 2010 at 8:19 AM, Gabriel Roldán <span dir="ltr">&lt;<a href="mailto:groldan@opengeo.org">groldan@opengeo.org</a>&gt;</span> wrote:<br>

<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">Hey tilers,<br>
<br>
looks like for ArcGIS 10 ESRI came to the same conclusion than us at the<br>
break out meeting: that a &quot;compact tiling format&quot; that stores multiple<br>
tiles in a single file would be cool:<br>
&lt;<a href="http://help.arcgis.com/en/arcgisserver/10.0/help/arcgis_server_dotnet_help/index.html#/Inside_the_compact_cache_storage_format/00930000165z000000/" target="_blank">http://help.arcgis.com/en/arcgisserver/10.0/help/arcgis_server_dotnet_help/index.html#/Inside_the_compact_cache_storage_format/00930000165z000000/</a>&gt;<br>


of course &quot;The internal architecture of the bundle is not publicly<br>
documented by ESRI&quot;<br>
<br>
But wouldn&#39;t it be nice if we defined our own thing collaboratively<br>
using this list as a communication board? Then tile blob stores could be<br>
used interchangeably by our projects?<br>
<br>
If interested, we could start thinking about this. Sounds like a nice<br>
new year project to me.<br>
<br>
Cheers,<br>
Gabriel<br>
--<br>
Gabriel Roldan<br>
<a href="mailto:groldan@opengeo.org">groldan@opengeo.org</a><br>
Expert service straight from the developers<br>
<br>
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</blockquote></div><br>