Modern applications require advanced techniques and tools to process large volumes of
uncertain data. For that purpose we introduce cardinality constraints as a principled tool to …

XML has gained widespread acceptance as a premier format for publishing, sharing and
manipulating data through the web. While the semi-structured nature of XML provides a high …

Integrity constraints capture relevant requirements of an application that should be satisfied
by every state of the database. The theory of integrity constraints is largely a theory over …

Modern applications require advanced techniques and tools to process large volumes of
uncertain data. For that purpose we study cardinality constraints and functional …

Conceptual models are relational database schemata that result from conceptual data
modeling. Conceptual models usually capture the semantics of the underlying application …

Keys are fundamental for database management, independently of the particular data model
used. In particular, several notions of XML keys have been proposed over the last decade …

We introduce soft cardinality constraints which need to be satisfied on average only, and
thus permit violations in a controlled manner. Starting from a highly expressive but …

This paper proposes the paradigm and the corresponding normalization algorithms with
coexistence of eXtensible Markup Language(XML) functional dependence and XML values …

Submission note: A thesis submitted in total fulfilment of the requirements for the degree of
Doctor of Philosophy to the School of Engineering and Mathematical Sciences, Faculty of …

We study the implication problem for the combined class of functional and full hierarchical
dependencies in the presence of SQL's NOT NULL constraints. Two different notions of …