GraphQL

GraphQL Overview

• GraphQL is a data querying language for databases or similar API usage.

• Data is distinguished by type, with fields and methods for each.

• GraphQL handles requests in parsed JSON format.

@connection

• Among the schema annotations, directive followed by @connection allows establishing relationships between resources (1-to-1; 1-to-many; many-to-many). An example (from the Amplify docs) is:

directive @connection(keyName: String, fields: [String!]) on FIELD_DEFINITION

• The values for fields and keyName establish associated resources and defined indexes for the relationship.