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 …

Data integration is the problem of combining data residing at different sources, and
providing the user with a unified view of these data. The problem of designing data …

Materialized view selection is a critical problem in many applications such as query
processing, data warehousing, distributed and semantic web databases, etc. We refer to the …

A data warehouse stores materialized views of data from one or more sources, with the
purpose of efficiently implementing decision-support or OLAP queries. One of the most …

Materialized views are queries whose results are stored and maintained in order to facilitate
access to data in their underlying base tables. In the SQL setting, they are now considered a …

A data warehouse stores materialized views of data from one or more sources, with the
purpose of efficiently implementing decision-support or OLAP queries. One of the most …

Data freshness has been identified as one of the most important data quality attributes in
information systems. This importance increases particularly in the context of distributed …

Graph data is prevalent in many domains, but it has usually required specialized engines to
analyze. This design is onerous for users and precludes optimization across complete …

Many challenging problems in information systems engineering involve the manipulation of
complex metadata artifacts or models, such as database schema, interface specifications, or …

We consider the setting of a Semantic Web database, containing both explicit data encoded
in RDF triples, and implicit data, implied by the RDF semantics. Based on a query workload …