A Simple MapReduce with MongoDB and C#
Posted by: K. Scott Allen,
on 19 Mar 2012 |
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If you work with relational databases and someone says "data aggregation", you immediately think of a GROUP BY clause and the standard aggregation operators, like COUNT, MIN, and MAX. MapReduce with MongoDB is also a form of data aggregation where you can take a large amount of information and aggregate (reduce) the information to some smaller amount of information. Before reducing you have the ability translate (map) the information into a structure designed for the custom reduction process. For...