GraphQL Query Language

Description

GraphQL is a query language for APIs, and this mini-course explains it in ten PDF lessons. It opens with what GraphQL is and why teams choose it, then covers the schema and how to write your first queries and mutations.

Further lessons look at variables and arguments, fragments and aliases, and how to find and fix errors. The later lessons discuss business use cases, practices for production systems, and connecting GraphQL to front-end applications, and the last one points to more advanced topics. Exercises and a template let you practise the syntax as you read.

Who it is for: developers who want an organised introduction to GraphQL.

What’s included
10 PDF lessons · 93 pages · about 19,500 words
One ZIP download that is yours to keep — read on any device, no subscription or app needed.

Course programme

1. Getting Started with GraphQL: What It Is and Why It Matters
2. Understanding GraphQL Schema
3. Writing Your First GraphQL Queries and Mutations
4. Working with Variables and Arguments in Queries
5. Exploring GraphQL Fragments and Aliases
6. Handling Errors and Debugging GraphQL APIs
7. Real-World Business Applications and Use Cases
8. Best Practices for GraphQL in Production Environments
9. Integrating GraphQL with Frontend Applications
10. Next Steps: Advanced GraphQL Concepts and Resources