... on existing evolution support schemes and introduces a more general and functional mechanism to support schema evolution andinstance ... compatibility for old applications, while permitting a wider range of evolution operations. It achieves this by supporting schema ...
Publication - cat - 04/17/2013 - 12:38 - 0 comments - 1 attachment
... 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
... 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
... components. We show that data independence, which is a neglected concept in object databases, helps to avoid reorganizations in case ... and reducing schema transformations. We informally present a couple of examples to illustrate the idea of a schema transformation ...
Publication - cat - 04/17/2013 - 07:05 - 0 comments - 0 attachments
... These problems occur when the semantics of values of a particular domain change over time in ways that are not amenable to applying ...
Publication - cat - 04/17/2013 - 06:27 - 0 comments - 1 attachment
... Moon, Hyun J.; Curino, Carlo A.; Deutsch, Alin; Hou, Chien-Yi; Zaniolo, Carlo ... C Deutsch, A Hou, C ...
Publication - krlis1337 - 04/17/2013 - 01:38 - 0 comments - 1 attachment
... and/or physically. An example is changing from toone to a one-to-many relationship. Reorganizatmn m a necessary function system. This paper introduces the basic concepts of ...
Publication - cat - 04/16/2013 - 17:49 - 0 comments - 1 attachment
... S Kosky, A Year: ... transform data between heterogeneous databases arises from a number of critical tasks in data management. These tasks are complicated by ...
Publication - erhard - 04/16/2013 - 12:16 - 0 comments - 1 attachment
... Bellahsène, Z; Bonifati, A; Rahm, E Author: ... Z Bonifati, A Rahm, E ...
Publication - cat - 04/16/2013 - 11:49 - 0 comments - 0 attachments
... and incremental development. On the schema level, a firm restriction in this evolution is that it can only be done by evolving class hierarchies downwards by subclassing. We show a unified approach to class evolution in object-oriented databases, where class ...
Publication - cat - 04/16/2013 - 05:27 - 0 comments - 0 attachments
... Lee, AJ; Nica, A; Rundensteiner, EA Author: Lee, A Nica, A ...
Publication - cat - 04/16/2013 - 02:27 - 0 comments - 0 attachments
