Schema Evolution publication categorizer

... a tool, TReMer, for performing the merge operation in a model-driven development setting. Merge is arguably one of the most ... analysis over them. TReMer draws on the theory developed in our earlier work where we describe how a set of models can be merged ...

Publication - cat - 04/17/2013 - 02:38 - 0 comments - 1 attachment

... 295.69 KB With the wider use of ontologies in the Semantic Web and as part of production systems, multiple scenarios for ... the new versions serendipitously; ontology-development in a collaborative environment can be synchronous or asynchronous; managers of ...

Publication - hartung - 04/17/2013 - 00:49 - 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

... support for programming schema mappings is still lacking. In particular, a tool for debugging schema mappings has not yet been developed. In this paper, we propose to build a debugger for understanding and exploring ...

Publication - huliganka - 04/16/2013 - 23:38 - 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

... (e.g., {author} corresponds to {first name, last name} in the Books domain). We observe that the co-occurrences patterns across query ... (e.g., {first name, last name}) tend to be co-present in query interfaces and thus positively correlated. In contrast, synonym ...

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

... events, changes to the user's requirements, and mistakes in the initial design. In this paper, we present a novel algorithm called DTD-Diff to detect the ...

Publication - cat - 04/16/2013 - 14:16 - 0 comments - 1 attachment

... between them. This makes it hard to compare approaches. In this paper, we present a manifesto for research on model merging. We ...

Publication - cat - 04/16/2013 - 13:16 - 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