Difference: Meeting071206 (4 vs. 5)

Revision 52007-12-12 - PhilippeCharpentier

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META TOPICPARENT name="BKDev"

Bookkeeping meeting, December 6th 2007

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  Marianne presented the current status of the system, which is also in slides from Carmine Cioffi.
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There were discussions on the understanding of the actual content of the views (roottree and JobFileInfo tables). The understanding was that roottree contains for each file an summary of all parameters that can be used to make queries. Each entry then points to a JobFileInfo table that contains the most usual metadata for that file.
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There were discussions on the understanding of the actual content of the views (roottree and JobFileInfo tables) that lasted until after I released the summary ;-). I hope it is now correct... Each JobFileInfo table contains a list of files that have the same parameters in terms of queries (Config, evtType, fileType, program version). roottree contains as many rows as there are JobFileInfo tables and is used by the query in order to match the selection. If more than one row of roottree matches, the union of the JobFileInfo tables is used.
  AMGA is used as an access layer to the actual Oracle database. It implements authentication as well as an insulation from the actual backend. The actual BK schema is based on the generic AMGA schema.
 
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