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Understanding Relationships in MongoDB and Mongoose

Understanding Relationships in MongoDB & Mongoose Introduction MongoDB, being a NoSQL database, handles relationships differently than relational databases like MySQL. Instead of foreign keys, it uses Embedded Documents (Denormalization) and References (Normalization) to establish connections between data. In this guide, we’ll explore: One-to-One (1:1) Relationships One-to-Many (1:M) Relationships Many-to-Many (M:N) Relationships How to define them in MongoDB and Mongoose How to query them and what the results look like Let’s dive in!

Feb 16, 2025 - 23:20
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Understanding Relationships in MongoDB and Mongoose

Understanding Relationships in MongoDB & Mongoose

Introduction

MongoDB, being a NoSQL database, handles relationships differently than relational databases like MySQL. Instead of foreign keys, it uses Embedded Documents (Denormalization) and References (Normalization) to establish connections between data.

In this guide, we’ll explore:

  • One-to-One (1:1) Relationships
  • One-to-Many (1:M) Relationships
  • Many-to-Many (M:N) Relationships
  • How to define them in MongoDB and Mongoose
  • How to query them and what the results look like

Let’s dive in!

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