[Monetdb-developers] Information request

luca paganotti luca.paganotti at gmail.com
Fri Nov 18 09:11:22 CET 2011


Hi Fabian,

happy to ear you so soon,

I'm requested to build a huge database containing meteo observations. There
are about 200 meteostations in a given geographic area. Observations are
collected by a system that after some software procedures (aggregation,
interpolation, ...) generates some mappings in a grid of about 30000 points
to feed then model runs. There are 24 such grids for each day during the
year, each point of the grid is related to about 20 meteo parameters. The
first need we have is to store all these info in a structured way, in the
most efficient way. Then there is the need of making some analisys on these
data, mainly statistical analisys but also to be able to do spatial queries
on them. Time range of analisys could be from one month or less but could
also arrive to cover many years, let's say 20 years ..., in the case of
climatological analisys. The analisys should be done in the most effective
way.

To support these activities we need to write software on our own because we
need to integrate an existing system.

I then began to search for database management systems that could be able
to manage such data burden and amongst others I've found monetdb that seems
to fit the problem we have. It's oriented to scientific data/observations,
it has programming bindings in languages as java and C that could make it a
profitable solution for us, it's open source (we are using only open source
products ...) has some kind of spatial extensions, ... and here we are ...

These are the reasons I'm asking for C API.

In this context though I need to evaluate its usage and so I'm searching
for informattions.

Best regards.

--------------------------------------------------------------
-- Dott. Ing. Luca Paganotti
-- Via dei Giardini 9
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On Fri, Nov 18, 2011 at 8:28 AM, Fabian Groffen <Fabian.Groffen at cwi.nl>wrote:

> Hi Luca,
>
> On 18-11-2011 08:20:11 +0100, luca paganotti wrote:
> > I'm interested in learning more about monetdb, but I've some
> difficulties in
> > finding the informations I'm searching for.
> >
> > I would like to learn more about the C API, so I'm searching for some
> coding
> > examples. The only thing I found was presumably an old example (as Stefan
> > told me) about mapi usage that unfortunately doesn't work for me with
> > monetdb current release (tried both linux and windows releases). I wrote
> two
> > times to the developer list but at the moment no meaningful answer.
>
> I'm affraid the MAPI C-library isn't the best example of a clean and
> clear interface.  It has many (hidden) complexities that are mastered
> currently only be a few of us.
>
> Perhaps you could explain us in what way you intend to use MAPI.  Maybe
> we can give you a start, or suggest you an alternative way to achieve
> your goal.
>
>
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