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A Propagation Mechanism for Populated Schema Versions

... value and their structure. As the structure is described in the schema of the database, support for schema evolution is a highly ... which can be used to perform the required changes, even in the presence of populated databases and running applications. In this paper, ...

Publication - cat - 04/17/2013 - 13:05 - 0 comments - 0 attachments

The PRISM Workwench: Database Schema Evolution Without Tears

... to a perpetual evolution, which is particularly pressing in Web Information Systems, due to their distributed and often collaborative ... logical independence, and auditability of the process. In fact, PRISM exploits recent theoretical results on mapping composition, ...

Publication - krlis1337 - 04/17/2013 - 11:05 - 0 comments - 0 attachments

WOL: A Language for Database Transformations and Constraints

... databases arises from a number of critical tasks in data management. These tasks are complicated by schema evolution in the underlying databases and by the presence of non-standard database ... specifying such transformations, and its implementation in a system called Morphase (an “enzyme” for morphing data). WOL is ...

Publication - erhard - 04/16/2013 - 12:16 - 0 comments - 1 attachment

A framework for schema updates in an object-oriented database system

... schema is defined and the problems which need to be solved in order to obtain a usable schema update mechanism are shown. The distinction ... and behavioral consistency for the O2 system is described in some detail and it is demonstrated how updates could be performed by ...

Publication - cat - 04/16/2013 - 08:16 - 0 comments - 0 attachments

On-line Schema Update for a Telecom Database

... are allowed to block any type of transactions. We show in this paper a method to handle schema changes which is based on a ... any transactions. A nice feature of the method presented in this paper is that it is easy to integrate into an already existing ...

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

Evolutionary database design

... decisions called protocolling. These concepts are realized in Presto, a development environment for an evolutionary design of database ...

Publication - cat - 04/16/2013 - 01:49 - 0 comments - 0 attachments

On the Controlled Evolution of Process Choreographies

... choreographies. If respective modifications are applied in an uncontrolled manner, inconsistencies or errors might occur in the sequel. In particular, modifications of private processes performed by a ...

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