MongoDB - Model One-to-One, One-to-Many Relationships Embedded Documents | SpringBoot

MongoDB - Model One-to-One, One-to-Many Relationships Embedded Documents | SpringBoot

https://grokonez.com/spring-framework/spring-data/mongodb-model-one-one-one-many-relationships-mongodb-embedded-documents-springboot

With MongoDB, we can structure related data by embedded documents. In general, embedding gives a better performance for read operations. So in the tutorial, JavaSampleApproach will show you way to work with Embedded Documents using SpringBoot.

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• Spring JPA One to Many Relationship
• SpringData MongoRepository
• SpringData MongoDB GridFsTemplate to save, retrieve, delete binary files (Image, Text files)
• Angular 4 + Spring Boot + MongoDB CRUD example

I. Technologies

– Java 1.8
– Maven 3.3.9
– Spring Tool Suite – Version 3.8.1.RELEASE
– Spring Boot: 1.5.6RELEASE
– MongoDB: v3.4.1

II. MongoDB - Embedded Documents

Embedded Documents are generally known as denormalized models. It is a way to structure related data in a single document. See below diagram:

In general, we decide to design data as embedded models in case: data contains one-to-one or one-to-many relationships between entities.

With embedding data model, in general, it gives us a better performance for read operations. And we can use a single atomic read/write database operation to request and retrieve or update related data.

However, a weakness point is embedding related data in documents may lead to situations where documents grow after creation.

III. Practice

More at:
https://grokonez.com/spring-framework/spring-data/mongodb-model-one-one-one-many-relationships-mongodb-embedded-documents-springboot