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Data Warehousing 101

Data Warehousing 101

Posted Jul 21, 2011 17:37 UTC (Thu) by jeremiah (subscriber, #1221)
Parent article: Data Warehousing 101

Nice article. Now if I could find some kind of DB that's good at storing deconstructed XML or JSON with version information I'd be a happy camper. I'm always drawn to map-reduce, but always find myself using going back to RDBMS w/ recursive queries.

I've got a situation where every attribute and element is version-ed and stored separately. Everything is treated as a node, and the relationships between nodes are defined by the query. Needless to say, it's a little trippy. Or to say it another way, we can store to different directed graphs, and define the structure of a third, and have the DB/code fill in the values of the 3rd, using the first two.

Anyone know of some kind of db architecture that would be inherently good at this?


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Data Warehousing 101

Posted Jul 21, 2011 19:41 UTC (Thu) by jberkus (subscriber, #55561) [Link]

Jeremiah,

If only there were! There's a few different implementations of graph databases, of which Neo4J is probably the leader, but every one I've seen is hard to use and has some substantial scalability limitations.

I think Postgres & WITH RECURSIVE, plus pl/perl or pl/python stored procedures for the decomposition may be your current best bet.

Data Warehousing 101

Posted Jul 21, 2011 20:28 UTC (Thu) by jeremiah (subscriber, #1221) [Link]

Except for the languages listed, that's what I've got. I found Neo4J difficult because of the lack of flexibility in defining relationships, ie they couldn't be dynamic. At times I even toy with the idea of doing something on my own at the file system level, but it's just not worth the effort, esp trying to redo a lot of the features that the Postgres folks have worked so hard over the years to develop. And I'm sure I could never approach their level of scalability on my own. Thanks for the input.

Data Warehousing 101

Posted Aug 4, 2011 0:12 UTC (Thu) by Lennie (guest, #49641) [Link]


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