This chapter introduces you to the aggregation framework, a feature unique to MongoDB. This feature represents a departure point where MongoDB forges ahead of its legacy relational database management system (RDBMS) ancestors. In this chapter, you will also learn about the legacy Map-Reduce capability, which has been available in MongoDB since the beginning. Two other extremely useful techniques covered in this chapter are how to model complex queries using the MongoDB Compass tool and how to conduct geospatial queries.
The focus of this chapter is on financial reports, including revenue reports aggregated by user-selectable criteria, aging reports, and how to perform financial analysis on booking trends in order to create a financial sales projection report for Book Someplace. In this chapter, you will learn how all these revenue...
