Questions
8 of 10
1What is GraphQL schema?
2What are root operation types?
3What are scalar types?
4What are Enum types?
5What are Type modifiers?
6What are object types?
7What are input types?
8Describe interface type.
9Discuss Union types.
10What is an exclamation point in GraphQL?
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Basics
Schema
Queries
Mutations
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Resolver
Directives
Pagination
Error Handling
Scalars
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Batching and Caching
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08 / 10

Describe interface type.

An Interface is an abstract type that includes a certain set of fields that a type must include to implement the interface.

  1. 1

    Interfaces are useful when you want to return an object or set of objects, but those might be of several different types.

  2. 2

    An interface specifies a set of fields that multiple object types can include

If an object type implements an interface, it must include all of that interface's fields: