Thats a unique idea.You should consider the following idea to enhance your idea so that it would impact uniquely: The foundational homomorphism techniques introduced by Chandra and Merlin for testing containment of conjunctive queries have recently attracted rened interest due to their central role in information integration applications.  show that generalizations of the classical tableau representation of conjunctive queries are useful for computing query ansrs in information integration systems where information sources are modeled as views defined on a virtual global schema.  consider a general situation where sources may or may not be known to be correct and complete.  characterize the set of ansrs to a global query and give algorithms to compute a finite representation of this possibly infinite set, as ll as its certain and possible approximations.  show how to rewrite a global query in terms of the sources in two special cases, and show that one of these is equivalent to the Information Manifold rewriting of Levy et al.
['Gösta Grahne', 'Alberto O. Mendelzon']
I am writing a research paper on a idea Tableau techniques for querying information sources through global schemas
[{"from": "human", "value": "I am writing a research paper on a idea Tableau techniques for querying information sources through global schemas"}, {"from": "gpt", "value": "Thats a unique idea.You should consider the following idea to enhance your idea so that it would impact uniquely: The foundational homomorphism techniques introduced by Chandra and Merlin for testing containment of conjunctive queries have recently attracted rened interest due to their central role in information integration applications.  show that generalizations of the classical tableau representation of conjunctive queries are useful for computing query ansrs in information integration systems where information sources are modeled as views defined on a virtual global schema.  consider a general situation where sources may or may not be known to be correct and complete.  characterize the set of ansrs to a global query and give algorithms to compute a finite representation of this possibly infinite set, as ll as its certain and possible approximations.  show how to rewrite a global query in terms of the sources in two special cases, and show that one of these is equivalent to the Information Manifold rewriting of Levy et al."}]