Shared types across subgraphs in GraphQL - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a shared type in a subgraph schema.

GraphQL

type Product @key(fields: "id") {
  id: ID! 
  name: String! 
  [1]: Float
}

Drag options to blanks, or click blank then click option'

Aprice

Bweight

Cdescription

Dcategory

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing a field that is not numeric like 'name' or 'category'.

Leaving the field blank.

The price field is commonly shared across subgraphs to represent product cost.

2fill in blank

medium

Complete the code to extend a shared type in another subgraph.

GraphQL

extend type Product @key(fields: "id") {
  id: ID! 
  [1]: String
}

Drag options to blanks, or click blank then click option'

Aweight

Bmanufacturer

Cprice

Dstock

Attempts:

3 left

💡 Hint

Common Mistakes

Using fields already defined in the base type like 'price'.

Choosing numeric fields instead of descriptive text.

The manufacturer field is often added in an extension to provide additional product details.

3fill in blank

hard

Fix the error in the shared type definition by completing the directive.

GraphQL

type User @[1](fields: "id") {
  id: ID! 
  username: String!
}

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Akey

Bexternal

Cprovides

Drequires

Attempts:

3 left

💡 Hint

Common Mistakes

Using @external which is for fields, not types.

Using @provides or @requires which are for field-level directives.

The @key directive marks the primary key field for the shared type.

4fill in blank

hard

Fill both blanks to correctly mark a field as shared and external.

GraphQL

extend type Review @key(fields: "id") {
  id: ID! 
  username: String @[1] @[2]
}

Drag options to blanks, or click blank then click option'

Aexternal

Bprovides

Drequires

Attempts:

3 left

💡 Hint

Common Mistakes

Using @provides or @requires instead of @external.

Not marking the field as external when extending.

The username field is marked as external to indicate it is defined in another subgraph.

5fill in blank

hard

Fill all three blanks to define a shared type with a key and external field.

GraphQL

type Product @[1](fields: "id") {
  id: ID! 
  name: String!
  price: Float @[2] @[3]
}

Drag options to blanks, or click blank then click option'

Akey

Bexternal

Dprovides

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing @provides with @external.

Not marking the key directive correctly.

The @key directive marks the primary key. The price field is marked external to indicate it is shared from another subgraph.