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Quasi-inverses of schema mappings

... the exact semantics of this operator turned out to be a fairly delicate task. Furthermore, this notion is rather restrictive, since it is rare that a schema mapping possesses an inverse. In this paper, we introduce and study ...

Publication - huliganka - 04/17/2013 - 02:49 - 0 comments - 1 attachment

Constraint-based XML query rewriting for data integration

... 0 Citations range:  n/a Attachment Size ... We study the problem of answering queries through a target schema, given a set of mappings between one or more source schemas and ...

Publication - huliganka - 04/17/2013 - 00:38 - 0 comments - 1 attachment

Nested Mappings: Schema Mapping Reloaded

... Fuxman, A.; Hernandez, M.A.; Ho, H.; Miller, R.J.; Papotti, P.; Popa, L. ...

Publication - huliganka - 04/17/2013 - 00:05 - 0 comments - 1 attachment

Query reformulation with constraints

... Deutsch, A.; Popa, L.; Tannen, V. Author:  ... 0 Citations range:  ...

Publication - huliganka - 04/16/2013 - 23:38 - 0 comments - 1 attachment

Clio Grows Up: From Research Prototype to Industrial Tool

... schema mappings, has progressed in the past few years from a research prototype into a technology that is behind some of IBM's mapping technology. Clio provides a ...

Publication - admin - 04/16/2013 - 13:38 - 0 comments - 1 attachment

Mapping Adaptation under Evolving Schemas

... reflected in the mappings. Mappings left inconsistent by a schema change have to be detected and updated. As large, complicated ... view definitions) is becoming impractical. We present a novel framework and a tool (ToMAS) for automatically adapting mappings as ...

Publication - cat - 04/16/2013 - 10:49 - 0 comments - 1 attachment

Semantic Adaptation of Schema Mappings when Schemas Evolve

... depending on the schemas, such as schema mappings. In a heterogenous environment, where cooperation among data sources depends ... mappings and the evolution. We design and implement a mapping adaptation system based on mapping composition as well as ...

Publication - cat - 04/16/2013 - 09:16 - 0 comments - 1 attachment