MongoDB Recipes: With Data Modeling and Query Building Strategies

© Subhashini Chellappan and Dharanitharan Ganesan 2020

S. Chellappan, D. GanesanMongoDB Recipeshttps://doi.org/10.1007/978-1-4842-4891-1_3

3. Data Modeling and Aggregation

Subhashini Chellappan¹  and Dharanitharan Ganesan²

(1)

Bangalore, India

(2)

Krishnagiri, Tamil Nadu, India

 

In Chapter 2, we discussed MongoDB CRUD operations, embedded documents, and arrays. In this chapter, we cover the following topics.

• Data models.

• Data model relationship between documents.

• Modeling tree structures.

• Aggregation operations.

• SQL aggregation terms and corresponding MongoDB aggregation operations.

Data Models

MongoDB provides two data model designs for data modeling:

• Embedded data models.

• Normalized data models.

Embedded Data Models

In MongoDB, you can embed related data in a ...