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G-Log: a graph-based query language

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3 Author(s)
Paredaens, J. ; Antwerp Univ., Belgium ; Peelman, P. ; Tanca, L.

We introduce G-Log, a declarative query language based on graphs, which combines the expressive power of logic, the modeling power of complex objects with identity and the representation power of graphs. G-Log is a nondeterministic complete query language, and thus allows the expression of a large variety of queries. We compare G-Log to well-known deductive database languages, and find that it is the only nondeterministic and computationally complete language that does not suffer from the copy-elimination problem. G-Log may be used in a totally declarative way, as well as in a “more procedural” way. Thus, it provides an intuitive, flexible graph-based formalism for nonexpert database users

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Knowledge and Data Engineering, IEEE Transactions on  (Volume:7 ,  Issue: 3 )