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  1. No Access

    Article

    Aggregate Queries Over Conditional Tables

    Conditional tables have been identified long ago as a way to capture unknown or incomplete information. However, queries over conditional tables have never been allowed to involve column functions such as aggr...

    Jens Lechtenbörger, Hua Shu, Gottfried Vossen in Journal of Intelligent Information Systems (2002)

  2. No Access

    Article

    Using Constraint Satisfaction for View Update

    View update is the problem of translating update requests against a view into update requests against the base data. In this article, we present a novel approach to generating alternative translations of view ...

    Hua Shu in Journal of Intelligent Information Systems (2000)

  3. No Access

    Chapter and Conference Paper

    View maintenance using conditional tables

    This paper presents a new approach to maintaining materialized views without accessing the underlying base relations. Views can be made self-maintainable using additional data together with the views. For inst...

    Hua Shu in Deductive and Object-Oriented Databases (1997)