The problem of answering queries using views is to find efficient methods of answering a
query using a set of previously defined materialized views over the database, rather than …

This is an overview of the end-to-end data cleaning process. Data quality is one of the most
important problems in data management, since dirty data often leads to inaccurate data …

This database theory book provides a focused presentation of the core material on relational
databases, and presents a number of advanced topics in a unified framework. Some of the …

Database Management Systems provides comprehensive and up-to-date coverage of the
fundamentals of database systems. Coherent explanations and practical examples have …

Maier ACM SIGMOD Anthology ACM SIGMOD dblp.uni-trier.de Maier: Theory of Relational
Databases David Maier: The Theory of Relational Databases. Computer Science Press 1983 …

Data exchange is the problem of taking data structured under a source schema and creating
an instance of a target schema that reflects the source data as accurately as possible. In this …

In this paper, we introduce a family of expressive extensions of Datalog, called Datalog+/-,
as a new paradigm for query answering over ontologies. The Datalog+/-family admits …

AfSSTRACT: Many real-world situations can be captured by a set of functional
dependencies and a single join dependency of a particular form called acyclic [B..]. The join …

Evaluating the relational join is one of the central algorithmic and most well-studied
problems in database systems. A staggering number of variants have been considered …

We consider positive rules in which the conclusion may contain existentially quantified
variables, which makes reasoning tasks (such as conjunctive query answering or …