Given the schema type Query { book: Book } and data { book: { title: "1984", author: "Orwell" } }, what will the default resolver return for the field book?

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GraphQL - Resolvers

Given the schema type Query { book: Book } and data { book: { title: "1984", author: "Orwell" } }, what will the default resolver return for the field book?

A{ title: "1984", author: "Orwell" }

B"1984"

Cnull

DError: Resolver not found

Step-by-Step Solution

Solution:

Step 1: Understand default resolver behavior
The default resolver returns the data object matching the field name if it exists.
Step 2: Match field to data
The field book matches the data key book which contains the object with title and author.
Final Answer:
{ title: "1984", author: "Orwell" } -> Option A
Quick Check:
Field book returns matching data object [OK]

Quick Trick: Default resolver returns matching data object for field name [OK]

Common Mistakes:

Returning only one property instead of whole object
Expecting null if no custom resolver is defined
Assuming error if resolver is not explicitly written

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Given the schema type Query { book: Book } and data { book: { title: "1984", author: "Orwell" } }, what will the default resolver return for the field book?

Step 1: Understand default resolver behavior

Step 2: Match field to data

Final Answer:

Quick Check:

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