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Part 1 of this series provides detailed description on GraphQL server and how to start setting it up using springboot, Schema Definition Language (SDL) and its types. This article will provide details on how to query GraphQL API using GraphiQL, the rich relationship between type objects like member, skills, asset and nodes, and exception handling using the ‘GraphQLError Handler’ part of GraphQL servlet. In the next article we will learn more about querying graph DB using cypher queries and also touch upon Neo4j OGM library.