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EXPRESS: A Data EXtraction, PRocessing, and REStructuring System

... prototype data translation system which can access a wide variety of data and restructure it for new uses. The system is driven ... presented. The DEFINE description is compiled into a customized PL/l program for accessing source data. The restructuring ...

Publication - erhard - 04/17/2013 - 10:16 - 0 comments - 0 attachments

A Model for Compound Type Changes Encountered in Schema Evolution

... 420.56 KB Schema evolution is a problem that is faced by long-lived data. When a schema changes, existing persistent data can become inaccessible unless the ... the database maintainer can perform. We have developed a model of type changes involving multiple types. The model describes both type ...

Publication - erhard - 04/17/2013 - 10:05 - 0 comments - 1 attachment

Update Semantics of Relational Views

... 100 - 499 A database view is a portion of the data structured in a way suitable to a specific on views ...

Publication - erhard - 04/17/2013 - 09:38 - 0 comments - 0 attachments

An Axiomatic Model of Dynamic Schema Evolution in Objectbase Systems

... 50 - 99 A sound and complete axiomatic model is proposed for dynamic schema evolution ... an OBS. The inference mechanism performed by the model has a proven termination. (object-oriented, Theory, TODS / VLDBJ) ...

Publication - erhard - 04/17/2013 - 08:49 - 0 comments - 0 attachments

Comment on Bancilhon and Spyratos' "Update semantics and relational views"

... Keller, A.M. Author:  Keller, A Year:  ...

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

A Survey of Approaches to Automatic Schema Matching

... Rahm, E.; Bernstein, P. A. Author:  ... 191.63 KB Schema matching is a basic problem in many database application domains, such as data ... research papers have proposed many techniques to achieve a partial automation of the match operation for specific application domains. ...

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

Composing Schema Mappings: Second-Order Dependencies to the Rescue

... 486.39 KB A schema mapping is a specification that describes how data structured under one schema (the ... schema) is to be transformed into data structured under a different schema (the target schema). A fundamental problem is composing ...

Publication - cat - 04/16/2013 - 19:16 - 0 comments - 1 attachment

Relational languages for metadata integration

... 0 Citations range:  n/a Attachment Size ... 676.21 KB In this article, we develop a relational algebra for metadata integration, Federated Interoperable ...

Publication - cat - 04/16/2013 - 18:27 - 0 comments - 1 attachment

On the computation of relational view complements

... range:  n/a Attachment Size ... 311.36 KB Views as a means to describe parts of a given data collection play an important role in many database applications. ...

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

Schema Mediation for Large-Scale Semantic Data Sharing

... Halevy, A.; Ives, Z.; Suciu, D.; Tatarinov, I. ... Halevy, A Ives, Z ...

Publication - admin - 04/16/2013 - 17:27 - 0 comments - 1 attachment

Semantic and schematic similarities between database objects: a context-based approach

... Kashyap, V.; Sheth, A. Author:  ... V Sheth, A Year:  ...

Publication - admin - 04/16/2013 - 13:27 - 0 comments - 1 attachment

A framework for modeling and evaluating automatic semantic reconciliation

... Gal, A.; Anaby-Tavor, A.; Trombetta, A.; Montesi, D. Author:  ...

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

Automatic integration of Web search interfaces with WISE-Integrator

... these sources are database-driven E-commerce sites. It is a daunting task for users to access numerous Web sites individually to get the desired information. Hence, providing a unified access to multiple E-commerce search engines selling similar products ...

Publication - cat - 04/16/2013 - 07:27 - 0 comments - 0 attachments