Relational database has been the de-facto database choice in most IT applications. In the
last decade there has been increasing demand for applications that have to deal with …

The ever-increasing number of mobile device users has also raised the users' expectation of
mobile services accordingly. This phenomenon has given pressures to the mobile service …

This paper presents a Service Oriented Architecture (SOA) approach to a distributed
framework for reusing, extracting and extending large domain ontologies in the Semantic …

With the increasing demand for a proper and efficient XML data storage, XML-Enabled
Database (XEnDB) has emerged as one of the popular solutions. It claims to combine the …

Efficient way of storing data has always been a key requirement for a properly designed
database system. With the growing demand for this property, the first concept of an efficient …

A data warehouse is built as a layer on top of existing operational database systems. Once
built, it has to be regularly updated (refreshed). Currently, most data warehouse approaches …

Ontology as a formal representation of a domain knowledge has played an important role in
a distributed environment whereby semantic interoperability is a major factor. In this paper …

The extensible Markup Language (XML) has known since its beginnings an undeniable
success. Defined since its origins as a meta-language facilitating the development of …

The negative association between items in databases is as important and interesting as the
positive one. But, it has not been studied as much. We consider negative association in a …

Due to an explosive increase of XML documents, it is imperative to manage XML data in an
XML data warehouse. XML warehousing imposes challenges, which are not found in the …