Column-oriented DBMS and JOIN operations

Posted by André on Stack Overflow See other posts from Stack Overflow or by André
Published on 2010-05-19T16:01:21Z Indexed on 2010/05/20 13:50 UTC
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From some of the research I've done on NoSQL, column-oriented databases (like HBase or Cassandra) seem to solve the problem of costly JOIN operations, but I don't get how this approach solves this problem. Can anyone explain it to me and/or link me to interesting documentation regarding this area?

Thanks

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