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GraphQL APIs with Spring Boot · Lesson

Defining Custom Data Types

Create custom object types, scalar types, and enums in your GraphQL schema to represent your application's data.

Custom Types: Your Data's Blueprint

In GraphQL, data types are like blueprints for your application's information. They define the shape and kind of data that can be queried or modified.

While GraphQL provides some basic types, you'll often need to define your own to perfectly match your application's unique data structure.

GraphQL's Building Blocks

GraphQL has built-in scalar types like String, Int, Boolean, Float, and ID. These are fundamental, single-value types.

But real-world data is complex! This is where Object Types come in. They let you define objects with multiple fields, each having its own type.

All lessons in this course

  1. Defining Custom Data Types
  2. Implementing Data Resolvers
  3. Executing Simple GraphQL Queries
  4. GraphQL Mutations: Changing Data
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