Home

Search: a, Theory, Journal

11 results

Results

Structural characterizations of schema-mapping languages

... 11.7 KB Information integration is a key challenge faced by all major organizations, business and governmental ... formalisms and are chosen with two criteria in mind: (a) expressive power sufficient to specify interesting data interoperability ...

Publication - cat - 04/17/2013 - 11:16 - 0 comments - 1 attachment

A formal model for temporal schema versioning in object-oriented databases

... 10 - 49 In this paper we present a formal model for the support of temporal schema versions in object-oriented databases. Its definition is partially based on a generic (ODMG compatible) object model and partially introduces new concepts. ...

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

Schema Evolution and the Relational Algebra

... to support both aspects of transaction time, evolution of a database's contents and evolution of a database's schema. They define a relation's schema to be the relation's ...

Publication - erhard - 04/17/2013 - 08:27 - 0 comments - 0 attachments

A new algorithm for clustering search results

... Mecca, G; Raunich, S; Pappalardo, A Author:  ... Pappalardo, A Year:  ...

Publication - salva - 04/17/2013 - 06:27 - 0 comments - 0 attachments

Rank Aggregation for Automatic Schema Matching

... Domshlak, C.; Gal, A.; Roitman, H. Author:  ... C Gal, A Roitman, H ...

Publication - avigal - 04/17/2013 - 02:05 - 0 comments - 1 attachment

An O(ND) Difference Algorithm and Its Variations

... 81.22 KB The problems of finding a longest common subsequence of two sequences A and B and a shortest edit script for transforming A into B have long been ...

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

A Theory of Attributed Equivalence in Databases with Application to Schema Integration

... Larson, J. A.; Navathe, S. B.; Elmasri, R. ... range:  n/a Attachment Size ... 28.53 KB The authors present a common foundation for integrating pairs of entity sets, pairs of relationship ...

Publication - admin - 04/16/2013 - 15:16 - 0 comments - 1 attachment

Semantics of Database Transformations

... P Kosky, A Year:  ... their strengths and weaknessesd develops requirements on a formal model for specifying and implementing database transformations. We ...

Publication - erhard - 04/16/2013 - 11:38 - 0 comments - 1 attachment

Inheritance of Workflows An approach to tackling problems related to change

... The inheritance mechanism allows for the definition of a subclass which inherits the features of a specific superclass. When adapting a workflow process definition to specific ...

Publication - cat - 04/16/2013 - 09:49 - 0 comments - 0 attachments

A General Formal Framework for Schema Transformation

... McBrien, P.; Poulovassilis, A. Author:  ... Poulovassilis, A Year:  ...

Publication - huliganka - 04/16/2013 - 00:49 - 0 comments - 0 attachments

Losslessness and semantic correctness of database schema transformation: another look at schema equivalence

... range:  n/a Attachment Size ... two groups of relation schemata play important roles in a database environment. These transformations are used for obtaining normal ...

Publication - cat - 04/15/2013 - 20:27 - 0 comments - 1 attachment