Practical GraphQL - Become a GraphQL Ninja - Basic mutations

This video tutorial explores how to use GraphQL mutations to write data. It covers creating and resolving mutations, specifically focusing on the 'Make User' and 'Remove User' functions. The tutorial includes testing these mutations in a GraphQL playground and handling potential errors. It concludes with a challenge to create additional mutations for managing car data.

What is the primary purpose of a mutation in GraphQL?

• To query data

• To write or modify data

• To update the schema

• To delete data

What are the required inputs for the 'Make user' mutation?

• ID and email

• Name and email

• Name and age

• ID and name

In the resolver function for 'Make user', what is the purpose of the 'users.push' method?

• To add a new user to the array

• To delete a user

• To update a user

• To query a user

What keyword is used to specify a mutation in GraphQL?

• update

• mutation

• insert

• query

What type of value does the 'Remove user' mutation return?

• Integer

• Boolean

• String

• Array

What happens if you try to remove a user that does not exist in the array?

• The mutation returns false

• The mutation returns true

• An error is thrown

• The array is cleared

What is the purpose of reassigning the filtered array to the users variable in the 'Remove user' mutation?

• To sort the array

• To ensure the original array is updated

• To clear the array

• To create a backup of the array