Functional Dependencies for Graphs

  title={Functional Dependencies for Graphs},
  author={Wenfei Fan and Yinghui Wu and Jingbo Xu},
  booktitle={SIGMOD Conference},
We propose a class of functional dependencies for graphs, referred to as GFDs. GFDs capture both attribute-value dependencies and topological structures of entities, and subsume conditional functional dependencies (CFDs) as a special case. We show that the satisfiability and implication problems for GFDs are coNP-complete and NP-complete, respectively, no worse than their CFD counterparts. We also show that the validation problem for GFDs is coNP-complete. Despite the intractability, we develop… CONTINUE READING
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