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Posted to commits@cassandra.apache.org by Apache Wiki <wi...@apache.org> on 2011/01/12 20:28:37 UTC

[Cassandra Wiki] Update of "UseCases" by ThomasBoose

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The "UseCases" page has been changed by ThomasBoose.
http://wiki.apache.org/cassandra/UseCases?action=diff&rev1=11&rev2=12

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  == Simple time-series with roll-ups ==
  [[https://www.cloudkick.com/blog/2010/mar/02/4_months_with_cassandra/|Cloudkick]] implements time-series down at the second-level with roll-ups.
  
+ == An implementation of some DBMS rules written in python using pycassa
+ We have created a DBMS layer that handles references to other columnfamilys (foreign keys), Automatic reverse linking. required fields in columnfamilys and datatypes (long and datetime). It wraps the get, get_range, insert, remove funtions of pycassas columnfamilys. At this time it is limited to: on delete cascade and positive long numbers but this could change if there is enough interest. It suits our project.
+  
+ [[ThomasBoose/dbms%20implementation]]
+ 
+ Based on this article
+ 
+ [[ThomasBoose/EERD model components to Cassandra Column family's]]
+