Topic 13718 min readStructured Tutorial
MongoDB Relationships: One-to-One
Quick Answer
In MongoDB, a one-to-one relationship is modeled by embedding one document inside another or by referencing documents using unique identifiers. This approach ensures that each document in one collection corresponds to exactly one document in another, enabling efficient data retrieval and maintaining data integrity.
Learning Objectives
- Understand the concept of one-to-one relationships in MongoDB.
- Learn how to implement one-to-one relationships using embedding and referencing.
- Identify when to use embedding versus referencing for one-to-one relationships.
Introduction
MongoDB is a flexible NoSQL database that allows various ways to model relationships between data.
One-to-one relationships represent a scenario where a single document in one collection corresponds to exactly one document in another collection.
Understanding how to model these relationships effectively is key to building performant and maintainable applications.
