[Solved] Consider this enum definition:enum Level { BEGINNER INTERMEDIATE ADVANCED }Which of the following enum definitions will cause a schema validation error? | GraphQL

GraphQL - Schema Definition Language (SDL)

Consider this enum definition:

enum Level { BEGINNER INTERMEDIATE ADVANCED }

Which of the following enum definitions will cause a schema validation error?

Aenum Level { BEGINNER INTERMEDIATE ADVANCED1 }

Benum Level { BEGINNER INTERMEDIATE ADVANCED }

Cenum Level { BEGINNER INTERMEDIATE ADVANCED_ }

Denum Level { BEGINNER INTERMEDIATE ADVANCED BEGINNER }

Step-by-Step Solution

Solution:

Step 1: Check for duplicate enum values
Enum values must be unique; enum Level { BEGINNER INTERMEDIATE ADVANCED BEGINNER } repeats BEGINNER twice.
Step 2: Validate other options
Options C and D use valid names; underscore and digits allowed if not starting with digit.
Final Answer:
enum Level { BEGINNER INTERMEDIATE ADVANCED BEGINNER } -> Option D
Quick Check:
Enum values must be unique [OK]

Quick Trick: Enum values cannot repeat; duplicates cause errors [OK]

Common Mistakes:

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