These are introductory lectures to some aspects of the physics of strongly correlated electron
systems. I first explain the main reasons for strong correlations in several classes of …

The scope of this paper is to explore, analyze and develop a universal architecture that
supports mobile payments and mobile banking, taking into consideration the third and the …

This paper describes the overall architecture and design aspects of a hybrid relational and
XML database system called System RX. We believe that such a system is fundamental in …

Storing and querying XML documents using a RDBMS is a challenging problem since one
needs to resolve the conflict between the hierarchical, ordered nature of the XML data model …

Modern web wants the data to be in Resource Description Framework (RDF) format, a
machine‐readable form that is easy to share and reuse data without human intervention …

We study the problem of answering queries posed on virtual views of XML documents, a
problem commonly encountered when enforcing XML access control and integrating data …

A lot of research has been conducted by the database community on methods and
techniques for efficient XPath processing, with great success. Despite the progress made …

We study the problem of evaluating xpath queries over xml data that is stored in an rdbms
via schema-based shredding. The interaction between recursion (descendants-axis) in …

In recent years, column stores (or C-stores for short) have emerged as a novel approach to
deal with read-mostly data warehousing applications. Experimental evidence suggests that …

Predicate logic has long been seen as a good foundation for querying relational data. This is
embodied in the correspondence between relational calculus and first-order logic, and can …