Temporal and Real-Time Databases: A Survey
IEEE Transactions on Knowledge and Data Engineering
Proceedings of the International Workshop on Temporal Databases: Recent Advances in Temporal Databases
MARS: a system for publishing XML from mixed and redundant storage
VLDB '03 Proceedings of the 29th international conference on Very large data bases - Volume 29
ArchIS: an XML-based approach to transaction-time temporal database systems
The VLDB Journal — The International Journal on Very Large Data Bases
Graceful database schema evolution: the PRISM workbench
Proceedings of the VLDB Endowment
Managing and querying transaction-time databases under schema evolution
Proceedings of the VLDB Endowment
Automating database schema evolution in information system upgrades
Proceedings of the 2nd International Workshop on Hot Topics in Software Upgrades
When conceptual model meets grammar: A dual approach to XML data modeling
Data & Knowledge Engineering
Chronos: facilitating history discovery by linking temporal records
Proceedings of the VLDB Endowment
WOO: a scalable and multi-tenant platform for continuous knowledge base synthesis
Proceedings of the VLDB Endowment
Hi-index | 0.00 |
Schema evolution poses serious challenges in historical data management. Traditionally, historical data have been archived either by (i) migrating them into the current schema version that is well-understood by users but compromising archival quality, or (ii) by maintaining them under the original schema version in which the data was originally created, leading to perfect archival quality, but forcing users to formulate queries against complex histories of evolving schemas. In the PRIMA system, we achieve the best of both approaches, by (i) archiving historical data under the schema version under which they were originally created, and (ii) letting users express temporal queries using the current schema version. Thus, in PRIMA, the system rewrites the queries to the (potentially many) pertinent versions of the evolving schema. Moreover, the system o ers automatic documentation of the schema history, and allows the users to pose temporal queries over the metadata history itself. The proposed demonstration highlights the system features exploiting both a synthetic-educational running example and the real-life evolution histories (schemas and data), which include hundreds of schema versions from Wikipedia and Ensembl. The demonstration off ers a thorough walk-through of the system features and a hands-on system testing phase, where the audiences are invited to directly interact with the advanced query interface of PRIMA.