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 …

Written for practitioners of data mining, data cleaning and database management. Presents
a technical treatment of data quality including process, metrics, tools and algorithms …

Data integration is a pervasive challenge faced in applications that need to query across
multiple autonomous and heterogeneous data sources. Data integration is crucial in large …

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

The popularity of the World-Wide Web (WWW) has made it a prime vehicle for disseminating
information. The relevance of database concepts to the problems of managing and querying …

The data integration problem is to provide uniform access to multiple heterogeneous
information sources available online (eg, databases on the WWW). This problem has …

Accessing many data sources aggravates problems for users of heterogeneous distributed
databases. Database administrators must deal with fragile mediators, that is, mediators with …

We consider the problem of query optimization in the presence of limitations on access
patterns to the data (ie, when one must provide values for one of the attributes of a relation in …

We address the problem of query rewriting for TSL, a language for querying semistructured
data. We develop and present an algorithm that, given a semistructured query q and a set of …

We consider the problem of building a P2P-based search engine for massive document
collections. We describe a prototype system called ODISSEA (Open DIStributed Search …