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<p>Hi Markus & listers,</p>
<p>just to avoid someone doing duplicate work: the rasdaman array
database (<a class="moz-txt-link-abbreviated" href="http://www.rasdaman.org">www.rasdaman.org</a>) is supporting these standards already,
being official OGC and INSPIRE reference implementation. In doing
so rasdaman utilizes GDAL for both import and export, so there is
a fruitful collaboration between both open-source projects
already.<br>
</p>
<p>For those who do not know rasdaman:</p>
<p>- it supports WMS, WCS, WCPS, and WPS as geo interfaces, and our
users are regularly combining rasdaman with MapServer, OpenLayers,
Leaflet, QGIS, NASA WorldWind, python, and many more.<br>
</p>
<p>- it allows federated queries, caching, distributed array joins
and several more goodies that make it stand out.</p>
- Public installations exceed 250 TB. In the US, rasdaman has been
tagged a top Big Data solution (the only Array DB that has received
this recognition) [3]. Benchmarks show superior performance, see [1]
and evaluations published at AGU 2015 by U Wisconsin/Madison and
GMU. G. Landgraf, senior manager at the European Space Agency, this
January stated that "The RASDAMAN product is currently the
world leading environment in this domain and the standard working
horse
for OGC standardisation on these innovative data access interfaces."<br>
<p>- rasdaman has pioneered the field of array databases [0]; SciDB
and several others (SciQL, Teradata, Ophidia, Google Earth Engine,
...you name it) are taking up the rasdaman idea of a query
language with a dedicated server architecture (ours being based on
"tile streaming").<br>
</p>
- The rasdaman array query language is blueprint for the several
"Big Data" standards, including:
<p> * ISO SQL MDA (Multi-DImensional Arrays); after thorough
investigation of all options (including SciDB an PostGIS Raster)
the rasdaman query language has been selected by the ISO SQL group
as the only viable alternative. [1]<br>
</p>
<p> * OGC Web Coverage Processing Service (WCPS), an array
language with geo semantics. [2]<br>
</p>
<p>- it is part of OSGeo Live DVD since a couple of years.<br>
</p>
We very much encourage interested developers to team up for joint
GDAL/rasdaman work (futher projects welcome, of course)! And
scientific publications, of course.
<p>cheers,</p>
<p>Peter</p>
<p>[0] Peter Baumann: <em>On the Management of Multidimensional
Discrete Data.</em> VLDB Journal 4(3)1994, Special Issue on
Spatial Database Systems, pp. 401 - 444</p>
[1] D. Misev, P. Baumann: <em>Enhancing Science Support in SQL</em>.
Proc. Workshop Data and Computational Science Technologies for Earth
Science Research (co-located with IEEE Big Data), Santa Clara, US,
October 29, 2015[2] P. Baumann: <em><a target="pubs"
href="http://www.springerlink.com/openurl.asp?genre=article&id=doi:10.1007/s10707-009-0087-2">The
OGC Web Coverage Processing Service (WCPS) Standard</a></em>. <a
href="http://www.springerlink.com/content/100268/" target="pubs">Geoinformatica</a>,
14(4)2010, pp 447-479<br>
[2] G. Merticariu, D. Misev, P. Baumann: <em>Measuring Storage
Access Performance in Array Databases</em>. Proc. 7th Workshop on
Big Data Benchmarking (WBDB), December 14-15, 2015, New Delhi, India<br>
[3] <a class="moz-txt-link-freetext" href="http://bigdata.cioreview.com/vendor/2016/rasdaman">http://bigdata.cioreview.com/vendor/2016/rasdaman</a><br>
<br>
<div class="moz-cite-prefix">On 02/24/2017 01:31 PM, Markus Böhm
wrote:<br>
</div>
<blockquote
cite="mid:43af816c-0da3-efaf-bf5d-7c8863101a66@geoinformationsdienst.de"
type="cite">Dear list,
<br>
<br>
I hope this question is in the right place here. If not -- sorry.
<br>
<br>
We do some experiments with the community edition of scidb
(<a class="moz-txt-link-freetext" href="http://www.paradigm4.com/">http://www.paradigm4.com/</a>), an array database founded by Michael
Stonebraker. Scidb is often used with R und python. There are
allready gdal drivers (<a class="moz-txt-link-freetext" href="https://github.com/appelmar/scidb4gdal">https://github.com/appelmar/scidb4gdal</a>) to
load data into scidb.
<br>
<br>
I think those drivers are mainly for import and export of data
in/from scidb. I tried to use that gdal driver in mapserver to
visualize an gdal-uploaded array. It works already but seems to
be slow. Maybe I am using it wrong but I suppose that this driver
is not intended to perform well for example in mapserver.
<br>
<br>
Perhaps an enhanced scidb driver would be an interesting objective
for gdal. Scidb seems to be great with arrays and mulitple
dimensions can be worked with. In my opinion it would be quite
interesting to have scidb as backend for WMS, WCS and WPS services
that could be set up with mapserver and gdal. I think gdal would
be the right tool to implement a driver.
<br>
<br>
Perhaps someone already thought about a combination of scidb, gdal
and mapserver?
<br>
<br>
Cheers,
<br>
<br>
Markus
<br>
<br>
<br>
<br>
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<br>
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<br>
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</blockquote>
<br>
<pre class="moz-signature" cols="80">--
Dr. Peter Baumann
- Professor of Computer Science, Jacobs University Bremen
<a class="moz-txt-link-abbreviated" href="http://www.faculty.jacobs-university.de/pbaumann">www.faculty.jacobs-university.de/pbaumann</a>
mail: <a class="moz-txt-link-abbreviated" href="mailto:p.baumann@jacobs-university.de">p.baumann@jacobs-university.de</a>
tel: +49-421-200-3178, fax: +49-421-200-493178
- Executive Director, rasdaman GmbH Bremen (HRB 26793)
<a class="moz-txt-link-abbreviated" href="http://www.rasdaman.com">www.rasdaman.com</a>, mail: <a class="moz-txt-link-abbreviated" href="mailto:baumann@rasdaman.com">baumann@rasdaman.com</a>
tel: 0800-rasdaman, fax: 0800-rasdafax, mobile: +49-173-5837882
"Si forte in alienas manus oberraverit hec peregrina epistola incertis ventis dimissa, sed Deo commendata, precamur ut ei reddatur cui soli destinata, nec preripiat quisquam non sibi parata." (mail disclaimer, AD 1083)
</pre>
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