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List:       dart
Subject:    RE: [Dart] Backend Dart database: mined/queried by other apps?
From:       "Blezek, Daniel J (GE, Research)" <blezek () crd ! ge ! com>
Date:       2006-04-03 16:04:15
Message-ID: B744015F9200AA49B4E03549EED88B98067EB12F () SCHMLVEM01 ! e2k ! ad ! ge ! com
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Hi Matt,

  Yes, Dart2 stores most of it's small-ish data in an RDBMS.  While most \
installations are happy to use Derby, the embedded Java DB, you can fairly easily use \
any RDBMS that you like, provided it has a conformant JDBC driver (which is most \
anything).  We've really dropped working on anything other than derby as it gives the \
performance we need and makes things fairly tidy from the code standpoint.

  The way we run derby, however, is single application access only.  It is possible \
to run Derby in a full client server mode so that Dart will run, and 3rd party apps \
can also access the data.  This would mean someone would be responsible for starting \
Derby outside of Dart.  You could also switch over to Postgres, or Mysql.

  Large-ish data is stored in the project directory, gziped and referenced by it's \
MD5 hash.  This can be looked up in the database, and grabbed with a minimum of \
difficulty.

  Have a look at Schema.sql in dart/Resources/Server, it should mostly answer your \
questions about what Dart stores and how.

-dan

-----Original Message-----
From: dart-bounces+blezek=crd.ge.com@public.kitware.com
[mailto:dart-bounces+blezek=crd.ge.com@public.kitware.com]On Behalf Of
Matt England
Sent: Friday, March 31, 2006 9:08 PM
To: Dart email list
Cc: mengland@mengland.net
Subject: [Dart] Backend Dart database: mined/queried by other apps?


Can any of the data that Dart2 stores be mined/queried by other apps?  ie, 
is this data stored in a general database format that my group could write 
data-minging/trending tools for to analyze data over time...or for some 
other purpose?

-Matt 

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