... 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
... Rundensteiner, Elke A.; Koeller, Andreas; Zhang, Xin ... E Koeller, A Zhang, X ...
Publication - cat - 04/17/2013 - 06:16 - 0 comments - 1 attachment
... 0 Citations range: n/a Attachment Size ... 479.79 KB As a decision support information system, a data warehouse must provide high level ...
Publication - cat - 04/17/2013 - 05:27 - 0 comments - 1 attachment
... domain. Consequently, OLAP systems are represented by a multidimensional database schema to adequately reflect the application semantics. FIESTA presents a methodology for the evolution of such multidimensional schemas. Core of the ...
Publication - cat - 04/16/2013 - 18:16 - 0 comments - 1 attachment
... and completeness. In order to study this in more detail a workshop on Evolution and Change in Data Management was held in Paris in November 1999. It brought together researchers from a wide range of disciplines with a common interest in handling the fundamental ...
Publication - cat - 04/16/2013 - 11:38 - 0 comments - 1 attachment
... More than ever before schema transformation is a prevalent problem that needs to be addressed to accomplish for example the ... Such schema transformations are typically composed of a sequence of schema evolution operations. The execution of such sequences can ...
Publication - cat - 04/16/2013 - 07:49 - 0 comments - 1 attachment
... to block any type of transactions. We show in this paper a method to handle schema changes which is based on a transaction oriented change with the aid of triggers. The old and the new ...
Publication - cat - 04/16/2013 - 07:16 - 0 comments - 0 attachments
... 48.74 KB A temporal data warehouse can be defined as a set V of materialized views over non-temporal sources. We present a self-maintainable temporal data warehouse that, besides a set of temporal ...
Publication - huliganka - 04/16/2013 - 06:27 - 0 comments - 1 attachment
... Claypool, K.T.; Rundensteiner, E.A.; Heineman, G.T. Author: ... propose comprehensive support for relationship evolution. A complete schema evolution facility for any OODB system must provide (1) ...
Publication - cat - 04/16/2013 - 02:49 - 0 comments - 1 attachment
