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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

PRIMA: Archiving and Querying Historical Data with Evolving Schemas

... Schema evolution poses serious challenges in historical data management. Traditionally the archival data has been (i) ... or (ii) maintained under the original schema version in which they firstly appeared, leading to a perfect archival quality, but to a ...

Publication - krlis1337 - 04/17/2013 - 07:27 - 0 comments - 0 attachments

Update Rewriting and Integrity Constraint Maintenance in a Schema Evolution Support System: PRISM++

... more difficult and have thus far remained unsolved. In this paper, we address this issue by introducing a formal evolution model ... including the Genetic DB Ensembl (410+ schema versions in 9 years), and Wikipedia (240+ schema versions in 6 years). (Database ...

Publication - krlis1337 - 04/17/2013 - 06:49 - 0 comments - 0 attachments

Schema Evolution in Wikipedia: toward a Web Information System Benchmark

... maintenance problem that has only been studied in the framework of traditional information systems. However, the problem is likely to be even more severe in web information systems, where open-source software is often developed ...

Publication - krlis1337 - 04/17/2013 - 02:05 - 0 comments - 1 attachment

Managing the History of Metadata in support for DB Archiving and Schema Evolution

... Modern information systems, and web information systems in particular, are faced with frequent database schema changes, which generate ... to manage such evolution and preserve their history. In this paper, we describe the Pantha Rei Framework designed to provide ...

Publication - krlis1337 - 04/16/2013 - 10:05 - 0 comments - 0 attachments

Automating Database Schema Evolution in Information System Upgrades

... Hot Topics In Software Upgrade URL:  ... evolution process is the source of incessant problems in the life of information systems and a major stumbling block that prevent ...

Publication - krlis1337 - 04/16/2013 - 05:16 - 0 comments - 0 attachments