[Solved] Consider this mutation to add a new post:mutation { addPost(title: "Hello", content: "World") { id title } } How can you ensure the mutation does not overwrite existing posts with the same title? | GraphQL

GraphQL - Mutations

Consider this mutation to add a new post:

mutation { addPost(title: "Hello", content: "World") { id title } }

How can you ensure the mutation does not overwrite existing posts with the same title?

AImplement server-side checks to prevent duplicates

BAdd a unique constraint in the mutation syntax

CUse a query instead of mutation to avoid overwriting

DMutations automatically prevent duplicates

Step-by-Step Solution

Solution:

Step 1: Understand mutation limitations
GraphQL mutations do not enforce uniqueness by themselves.
Step 2: Identify how to prevent duplicates
Server-side logic or database constraints must handle duplicate prevention.
Final Answer:
Implement server-side checks to prevent duplicates -> Option A
Quick Check:
Server controls duplicates, not mutation syntax [OK]

Quick Trick: Prevent duplicates with server logic, not mutation syntax [OK]

Common Mistakes:

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Consider this mutation to add a new post: