You want to create an input type for updating a user's profile where all fields are optional except id. Which input type definition is correct?

hard📝 Application Q15 of 15

GraphQL - Schema Definition Language (SDL)

You want to create an input type for updating a user's profile where all fields are optional except id. Which input type definition is correct?

Ainput UpdateUserInput { id: ID! name: String! email: String age: Int }

Binput UpdateUserInput { id: ID! name: String email: String age: Int }

Cinput UpdateUserInput { id: ID! name: String! email: String! age: Int! }

Dinput UpdateUserInput { id: ID name: String! email: String! age: Int! }

Step-by-Step Solution

Solution:

Step 1: Understand requirement for optional fields
Only id must be required (non-null). Other fields should be optional, so no exclamation marks.
Step 2: Evaluate each option
input UpdateUserInput { id: ID! name: String email: String age: Int } has id: ID! required and others optional. input UpdateUserInput { id: ID name: String! email: String! age: Int! } makes id optional and others required, wrong. input UpdateUserInput { id: ID! name: String! email: String! age: Int! } makes all fields required, wrong. input UpdateUserInput { id: ID! name: String! email: String age: Int } makes name required, which is not desired.
Final Answer:
input UpdateUserInput { id: ID! name: String email: String age: Int } -> Option B
Quick Check:
Only id required, others optional [OK]

Quick Trick: Only add '!' to required fields in input types [OK]

Common Mistakes:

Master "Schema Definition Language (SDL)" in GraphQL

9 interactive learning modes - each teaches the same concept differently

Want More Practice?

15+ quiz questions · All difficulty levels · Free

More GraphQL Quizzes