human: Given a node-centered hypergraph: <hypergraph>, where nodes represent papers and hyperedges represent sets of papers co-cited by a source paper.

Details of the hypergraph:
Center node: "the view update problem for indefinite databases"
  Abstract: This paper introduces and studies a declarative framework for updating views over indefinite databases. An indefinite database is a database with null values that are represented, following the standard database approach, by a single null constant. The paper formalizes views over such databases as indefinite deductive databases, and defines for them several classes of database repairs that realize view-update requests. Most notable is the class of constrained repairs. Constrained repairs change the database "minimally" and avoid making arbitrary commitments. They narrow down the space of alternative ways to fulfill the view-update request to those that are grounded, in a certain strong sense, in the database, the view and the view-update request.

Connected through hyperedge HE-1 (induced by source paper "integrity constraints for general purpose knowledge bases"):
  with members:
    - "repairc a tool for ensuring data consistency by means of active integrity constraints"
    - "advancing multi context systems by inconsistency management"
    - "consistent query answers in the presence of universal constraints"

Connected through hyperedge HE-2 (induced by source paper "a new rational algorithm for view updating in relational databases"):
  with members:
    - "comparative study of view update algorithms in rational choice theory"
    - "an abductive framework for horn knowledge base dynamics"
    - "a rational and efficient algorithm for view revision in databases"
    - "an abductive framework for computing knowledge base updates"
    - "on the abductive or deductive nature of database schema validation and update processing problems"

Connected through hyperedge HE-3 (induced by source paper "comparative study of view update algorithms in rational choice theory"):
  with members:
    - "a new rational algorithm for view updating in relational databases"
    - "an abductive framework for horn knowledge base dynamics"
    - "a rational and efficient algorithm for view revision in databases"
    - "an abductive framework for computing knowledge base updates"

Connected through hyperedge HE-4 (induced by source paper "lossless selection views under conditional domain constraints"):
  with members:
    - "incremental satisfiability and implication for utvpi constraints"

Connected through hyperedge HE-5 (induced by source paper "an abductive framework for horn knowledge base dynamics"):
  with members:
    - "comparative study of view update algorithms in rational choice theory"
    - "on the complexity of second best abductive explanations"
    - "a new rational algorithm for view updating in relational databases"
    - "each normal logic program has a 2 valued minimal hypotheses semantics"
    - "compilability of propositional abduction"
    - "an abductive framework for computing knowledge base updates"
    - "coherent integration of databases by abductive logic programming"
    - "new polynomial classes for logic based abduction"

Connected through hyperedge HE-6 (induced by source paper "a rational and efficient algorithm for view revision in databases"):
  with members:
    - "on the abductive or deductive nature of database schema validation and update processing problems"

Question: Please tell me which class the center node belongs to. The 40 classes are: cs.NA(Numerical Analysis), cs.MM(Multimedia), cs.LO(Logic in Computer Science), cs.CY(Computers and Society), cs.CR(Cryptography and Security), cs.DC(Distributed, Parallel, and Cluster Computing), cs.HC(Human-Computer Interaction), cs.CE(Computational Engineering, Finance, and Science), cs.NI(Networking and Internet Architecture), cs.CC(Computational Complexity), cs.AI(Artificial Intelligence), cs.MA(Multiagent Systems), cs.GL(General Literature), cs.NE(Neural and Evolutionary Computing), cs.SC(Symbolic Computation), cs.AR(Hardware Architecture), cs.CV(Computer Vision and Pattern Recognition), cs.GR(Graphics), cs.ET(Emerging Technologies), cs.SY(Systems and Control), cs.CG(Computational Geometry), cs.OH(Other Computer Science), cs.PL(Programming Languages), cs.SE(Software Engineering), cs.LG(Machine Learning), cs.SD(Sound), cs.SI(Social and Information Networks), cs.RO(Robotics), cs.IT(Information Theory), cs.PF(Performance), cs.CL(Computation and Language), cs.IR(Information Retrieval), cs.MS(Mathematical Software), cs.FL(Formal Languages and Automata Theory), cs.DS(Data Structures and Algorithms), cs.OS(Operating Systems), cs.GT(Computer Science and Game Theory), cs.DB(Databases), cs.DL(Digital Libraries), cs.DM(Discrete Mathematics). Directly output the class name.

gpt: cs.DB(Databases)