GraphQL is a query language for APIs with this client can define what they need and server get exactly that, nothing more and nothing less.

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GraphQL is a query language for web APIs and a runtime for fulfilling queries with existing data. GraphQL gives clients the power to ask for precisely what they need, making it easy to evolve APIs with powerful developer tools.

This course is an introduction to GraphQL using the Node.js JavaScript runtime environment and Apollo Server. You’ll start with an introduction to GraphQL’s architecture and functions before exploring the structure of GraphQL data and learning to perform meaningful, complex queries. You’ll then learn how to update server data using mutations. Next, you’ll explore the GraphQL type system and schemas to set up a GraphQL server using Apollo Server. Once the server is set up, you’ll implement a full GraphQL application using Apollo and Node.js.

By the end of this course, you’ll have a rich understanding of GraphQL’s architecture and methodology and be prepared to deploy GraphQL applications to the web using Apollo and Node.js.

Getting Started with GraphQL using Node.js

## Arguments in GraphQL
We may use the parameters in GraphQL to describe what data we want from the server. GraphQL has its own set of statements for each field and nested object, making it a one-stop shop for performing numerous API queries.

Returning to our pizza application example, let’s pretend that we want our pizza application to display statistics about pizzas based on the words that the user enters into the application. Let’s take a look at the `GetPizzas` query from the previous lesson:


# Arguments in GraphQL
We may use the parameters in GraphQL to describe what data we want from the server. GraphQL has its own set of statements for each field and nested object, making it a one-stop shop for performing numerous API queries.

Returning to our pizza application example, let’s pretend that we want our pizza application to display statistics about pizzas based on the words that the user enters into the application. Let’s take a look at the `GetPizzas` query from the previous lesson:


Learn about GraphQL query operations with arguments.

Introduction

Getting to Know GraphQL

Queries

Mutations

Schemas and Types

Schema Validation

Schema Execution

Schema Introspection

GraphQL Best Practices

GraphQL Exam

Query Operation with Arguments

Arguments in GraphQL