O'Reilly logo

Elasticsearch Essentials by Bharvi Dixit

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Parent-child relationships

Similar to nested types, parent-child relationships also allow you to relate different entities together but they differ in the implementation and behavior. Unlike nested documents, they are not present within the same document, rather parent-child documents are completely separate documents. They follow the one to many relationship principle and allow you to define one type as parent and one or more as the child type.

Creating parent-child mappings

To create a parent-child mapping, you just need to specify which type should be the parent of the child type. You do not need to define anything extra in the parent type mapping but before indexing the data in the child type, you need to specify in the child's mapping who will ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required