With the development of inexpensive storage devices, space usage is no longer a bottleneck for computer users. However, the increasingly large amount of personal information poses ...
XML database functionality has been emerging in "XML-only" databases as well as in the major relational database products. Yet, there is no industry standard XML databas...
Complex queries often contain common or similar subexpressions, either within a single query or among multiple queries submitted as a batch. If so, query execution time can be imp...
Jingren Zhou, Johann Christoph Freytag, Per-Å...
A schema mapping is a high-level specification that describes the relationship between two database schemas. As schema mappings constitute the essential building blocks of data ex...
Ronald Fagin, Phokion G. Kolaitis, Alan Nash, Luci...
The development of complex systems invariably involves many stakeholders who have different perspectives on the problem they are addressing, the system being developed, and the pr...