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Define the Schema: First, define your data structure and types. In GraphQL, this is called the schema. The schema defines the queries and data types, specifying the expected data structure for the GraphQL server.
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Write the Query Statement: On the client side, write a GraphQL query statement. The query statement defines what data you want to retrieve from the server. A basic query statement typically looks like this:
graphqlquery { users { id name email } }
This query requests the id, name, and email for all users.
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Send the Query: Use an HTTP request to send the query from the client to the GraphQL server. Typically, this can be done using an HTTP POST request, where the query statement is wrapped in the request body.
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Process the Query: After receiving the query, the server processes it according to the defined schema and retrieves data from the database or other data sources.
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Return the Response: After processing the query, the server returns the data in the requested format to the client.
Through these steps, the client can retrieve the specific data it requested. This approach makes data retrieval more flexible and efficient.