GraphQL - Type Relationships
Which of the following is the correct GraphQL schema snippet to define a many-to-many relationship between
Student and Course?Which of the following is the correct GraphQL schema snippet to define a many-to-many relationship between Student and Course?
easy📝 Syntax Q12 of 15
Step-by-Step Solution
Solution:
Step 1: Check list syntax for many-to-many
Many-to-many requires lists, so fields must be lists like[Course!]!and[Student!]!.Step 2: Validate non-null and list usage
type Student { courses: [Course!]! } type Course { students: [Student!]! } correctly uses non-null lists of non-null items, which is best practice.Final Answer:
type Student { courses: [Course!]! } type Course { students: [Student!]! } -> Option DQuick Check:
Lists with non-null = correct schema [OK]
Quick Trick: Use square brackets for lists in GraphQL schema [OK]
Common Mistakes:
- Missing square brackets for lists
- Using singular fields instead of lists
- Using scalar types instead of object types
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