[Solved] Which of the following best describes the purpose of a resolver function in GraphQL? — Ans: It connects a GraphQL query to the actual data source and returns data. | GraphQL

GraphQL - Resolvers

Which of the following best describes the purpose of a resolver function in GraphQL?

AIt handles user authentication outside of GraphQL.

BIt connects a GraphQL query to the actual data source and returns data.

CIt formats the GraphQL query string before sending it to the server.

DIt defines the schema types and fields in GraphQL.

Step-by-Step Solution

Solution:

Step 1: Understand resolver role
Resolvers are functions that fetch or compute data for a GraphQL query.
Step 2: Match purpose to options
Only It connects a GraphQL query to the actual data source and returns data. correctly states that resolvers connect queries to data sources and return data.
Final Answer:
It connects a GraphQL query to the actual data source and returns data. -> Option B
Quick Check:
Resolver function purpose = Connect query to data [OK]

Quick Trick: Resolvers fetch data for queries, not define schema [OK]

Common Mistakes:

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Which of the following best describes the purpose of a resolver function in GraphQL?