一些对 schema 的理解。
TL;DR
Schema 是一种描述数据结构的方式，与数据实际存储的方式、结构和实现技术无关。
- GraphQL uses a schema to describe the shape of data.
- The schema defines a hierarchy of types with field that are populated from data stores.
- The schema specifies exactly which queries and mutations are available for clients to excute.
翻译
GraphQL server 使用 schema 来描述数据结构。Schema 划分了 type 和 field 的层次结构，这些 field 通常是存储在后端数据库中的。Schema 还定义了客户端可以执行的 queries 和 mutations。
这篇文章介绍了 schema 的基本概念，以及如何创建一个 GraphQL server。
Original docs
Your GraphQL server uses a schema to describe the shape of your available data. This schema defines a hierarchy of types with fields that are populated from your back-end data stores. The schema also specifies exactly which queries and mutations are available for clients to execute.
This article describes the fundamental building blocks of a schema and how to create one for your GraphQL server.