human: Given a hyperedge-centered hypergraph: <hypergraph>, where the center hyperedge groups authors who co-authored the same paper.

Details of the hypergraph:
Center hyperedge (induced by source paper "Query by example"):
  Abstract: In the last few years we have witnessed a trend to appeal to the non-professional user who has little or virtually no computer or mathematical background.

Includes members:
  Member "Theseus—a programming language for relational databeses":
    also connected through other hyperedges:
      - Hyperedge HE-1 (induced by source paper "Types and persistence in database programming languages")
  Member "Spatial management of data":
    also connected through other hyperedges:
      - Hyperedge HE-2 (induced by source paper "The perspective wall: detail and context smoothly integrated")
  Member "Explaining ambiguity in a formal query language":
    also connected through other hyperedges:
      - Hyperedge HE-3 (induced by source paper "AUTOJOIN: PROVIDING FREEDOM FROM SPECIFYING JOINS")
  Member "Human Factors Studies of Database Query Languages: A Survey and Assessment":
    also connected through other hyperedges:
      - Hyperedge HE-4 (induced by source paper "An empirical investigation of voice as an input modality for computer programming")
  Member "Query-by-example: the invocation and definition of tables and forms":
    also connected through other hyperedges:
      - Hyperedge HE-5 (induced by source paper "QBE/OBE: A Language for Office and Business Automation")
  Member "Combining keyword search and forms for ad hoc querying of databases":
    also connected through other hyperedges:
      - Hyperedge HE-6 (induced by source paper "Query-by-example: the invocation and definition of tables and forms")
  Member "QBE/OBE: A Language for Office and Business Automation":
    also connected through other hyperedges:
      - Hyperedge HE-7 (induced by source paper "Query-by-example: the invocation and definition of tables and forms")
  Member "Relational database: a practical foundation for productivity":
    also connected through other hyperedges:
      - Hyperedge HE-8 (induced by source paper "A foundation of CODD's relational maybe-operations")

Question: Please tell me which research area the co-authored paper (i.e., the source paper of the center hyperedge) belongs to. The 4 classes are: Computer science, Mathematics, Engineering, Economics, Psychology, Business. Directly output the class name.

gpt: Computer science