Schema Evolution publication categorizer

... merging and mapping is one of the most important issues in the Semantic Web because ontologies are developed and used by various ...

Publication - cat - 04/17/2013 - 03:05 - 0 comments - 1 attachment

... schema matching has proven to be an important first step in developing mappings for data exchange, integration, restructuring and schema evolution. In this paper we investigate contextual schema matching, in which selection ...

Publication - huliganka - 04/17/2013 - 00:16 - 0 comments - 1 attachment

... 666.47 KB Many problems in information integration rely on specifications, called schema mappings, that ... for both relational and nested data are well-known. In this work, we present a new formalism for schema mapping that extends these existing formalisms in two significant ways. First, our nested mappings allow for nesting and ...

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

... be a Σ1-query. An (equivalent) reformulation of q1 in the presence of C is a Σ2-query, q2, such that q2 gives the same ... ∪ Σ2-database instance that satisfies C. In general, there may exist multiple such reformulations and choosing among ...

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

... evolution, an area which has recently gained much interest in both research and practice. (Schema Evolution, Sigmod Record, Survey / ...

Publication - admin - 04/16/2013 - 22:49 - 0 comments - 1 attachment

... effort required for validation quickly becomes huge in large scale environments. The performance of a matching system, however, ... for measuring this trade-off is often a severe obstacle. In this paper, we present a technique for determining lower and upper ...

Publication - huliganka - 04/16/2013 - 20:27 - 0 comments - 1 attachment

... algorithms for large schemas prohibitively inefficient. In this paper we propose a clustering based technique for improving the ... efficiency and effectiveness. The technique can be used in addition to other optimization techniques. In the paper we describe the ...

Publication - huliganka - 04/16/2013 - 20:16 - 0 comments - 1 attachment

... calculate and display the entire set of correspondences in a single shot. Invariably, the result presented to the engineer includes ... the match algorithm fast enough for incremental matching in large schemas and to devise a user interface that avoids overwhelming the ...

Publication - cat - 04/16/2013 - 18:16 - 0 comments - 1 attachment

... data: given a source instance I of a schema S expressed in a source model, and a target model TM, it generates a schema S0 expressed in TM that is “equivalent” to S and an instance I0 of S0 “equivalent” ...

Publication - cat - 04/16/2013 - 03:38 - 0 comments - 1 attachment

... Mapping composition is a fundamental operation in metadata driven applications. Given a mapping over schemas S1 and S2 and ...

Publication - cat - 04/16/2013 - 03:16 - 0 comments - 1 attachment