Schema Evolution publication categorizer

Schema matching is a fundamental issue to many
database applications, such as query mediation and data
warehousing. It becomes a challenge when different vocabularies
are used to refer to the same real-world concepts. In
this context, a convenient approach, sometimes called extensional,
instance-based, or semantic, is to detect how the
same real world objects are represented in different databases
and to use the information thus obtained to match the
schemas. Additionally, we argue that automatic approaches
of schema matching should store provenance data about