MongoDB Aggregation Framework Essentials For Data Processing

MongoDB Aggregation Framework



  
  
  51. What is the aggregation framework in MongoDB?

The aggregation framework is a powerful MongoDB tool for data processing and transformation. It operates on a collection's documents and outputs aggregated results, enabling operations like filtering, grouping, sorting, and reshaping data.
Key Features:  

Chain operations using stages in a pipeline.
Perform data analytics without additional tools.
Supports a wide range of operators like $match, $group, and $project.



  
  
  52. Explain the $match stage in aggregation.

The $match stage filters docum...