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What Is Aggregation In Mongodb? |
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Answer» Aggregations operations PROCESS data records and return computed results. Aggregation operations group values from multiple documents together, and can perform a variety of operations on the GROUPED data to return a single result. MongoDB PROVIDES three WAYS to perform aggregation: the aggregation pipeline, the map-reduce function, and single purpose aggregation methods and commands. Aggregations operations process data records and return computed results. Aggregation operations group values from multiple documents together, and can perform a variety of operations on the grouped data to return a single result. MongoDB provides three ways to perform aggregation: the aggregation pipeline, the map-reduce function, and single purpose aggregation methods and commands. |
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