Description: Data mapping in GraphQL operations refers to the process of structuring and organizing the information exchanged between the client and the server. Unlike traditional REST APIs, where data is retrieved through multiple endpoints, GraphQL allows developers to define the exact shape of the data they want to receive, optimizing communication and reducing unnecessary data overhead. This approach enables clients to request only the information they need, resulting in greater efficiency and better performance. Data mapping in GraphQL involves creating a schema that defines data types, relationships between them, and the operations that can be performed. This schema acts as a contract between the client and the server, ensuring both parties have a clear understanding of the data structure. Additionally, data mapping facilitates validation and automatic documentation of the API, enhancing the developer experience. In summary, data mapping in GraphQL is essential for creating efficient and scalable applications across various technological domains, allowing for smoother interaction between the client and server.