Aaron Watters

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A new definition of complex objects is introduced which provides a denotation for incomplete tuples as well as partially described sets. Set values are “sandwiched” between “complete” and “consistent” descriptions (representing the Smyth and Hoare powerdomains respectively), allowing the maximal values to be arbitrary(More)
This paper describes a method for answering all relational calculus queries under the assumption that the domain of data values is sufficiently large. The method extends recent theoretical results that use extended relation representations to answer domain dependent queries, without the use of auxilliary variables or invented constants or an explicit(More)
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