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Which of the following is the correct GraphQL syntax to define a many-to-many relationship between two types, Author and Book?

easy📝 Syntax Q3 of 15
GraphQL - Type Relationships
Which of the following is the correct GraphQL syntax to define a many-to-many relationship between two types, Author and Book?
Atype Author { books: [Book!]! } type Book { authors: [Author!]! }
Btype Author { book: Book } type Book { author: Author }
Ctype Author { books: Book } type Book { authors: Author }
Dtype Author { books: Book! } type Book { authors: Author! }
Step-by-Step Solution
Solution:

  1. Step 1: Understand many-to-many syntax

    Many-to-many uses lists on both sides to represent multiple connections.

  2. Step 2: Check options for list syntax

    type Author { books: [Book!]! } type Book { authors: [Author!]! } uses lists ([Book!]! and [Author!]!) correctly, others do not use lists properly.

  3. Final Answer:

    type Author { books: [Book!]! } type Book { authors: [Author!]! } -> Option A

  4. Quick Check:

    Many-to-many syntax = lists on both sides [OK]
Quick Trick: Many-to-many uses lists on both sides [OK]
Common Mistakes:
  • Using single object instead of list
  • Missing non-null markers
  • Confusing list syntax

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