Digital Symposium Collection 2000

Evolvable View Environment (EVE): Non-Equivalent View Maintenance under Schema Changes Elke A. Rundensteiner, Andreas Koeller, Xin Zhang, Amber van Wyk, Yong Li, Amy J. Lee, and Anisoara Nica   View Paper (PDF)     View Demo (HTML)   Return to Demonstrations Abstract Supporting independent ISs and integrating them in distributed data warehouses (materialized views) is becoming more important with the growth of the WWW. However, views defined over autonomous ISs are susceptible to schema changes. In the EVE project we are developing techniques to support the maintenance of data warehouses defined over distributed dynamic ISs [5, 6, 7]. The EVE system is the first to allow views to survive schema changes of their underlying ISs while also adapting to changing data in those sources. EVE achieves this in two steps: applying view query rewriting algorithms that exploit information about alternative ISs and the information they contain, and in- crementally adapting the view extent to the view definition changes. Those processes are referred to as view synchronization and view adaption, respectively. They increase the survivability of materialized views in changing environments and reduce the necessity of human interaction in system maintenance. References Note: References link to DBLP on the Web. [1] Divyakant Agrawal , Amr El Abbadi , Ambuj K. Singh , Tolga Yurek : Efficient View Maintenance at Data Warehouses. SIGMOD Conference 1997 : 417-427 [2] ... [3] Amy J. Lee , Andreas Koeller , Anisoara Nica , Elke A. Rundensteiner : Data Warehouse Evolution: Trade-Offs between Quality and Cost of Query Rewritings. ICDE 1999 : 255 [4] ... [5] ... [6] Anisoara Nica , Amy J. Lee , Elke A. Rundensteiner : The CVS Algorithm for View Synchronization in Evolvable Large-Scale Information Systems. EDBT 1998 : 359-373 [7] Anisoara Nica , Elke A. Rundensteiner : Using Containment Information for View Evolution in Dynamic Distributed Environments. DEXA Workshop 1998 : 212-217 [8] Elke A. Rundensteiner , Amy J. Lee , Anisoara Nica : On Preserving Views in Evolving Environments. KRDB 1997 : 13.1-13.11 [9] Xin Zhang , Elke A. Rundensteiner : Data Warehouse Maintenance under Concurrent Schema and Data Updates. ICDE 1999 : 253 BIBTEX @inproceedings{DBLP:conf/sigmod/RundensteinerKZWLLN99,   author    = {Elke A. Rundensteiner and                 Andreas Koeller and                 Xin Zhang and                 Amber van Wyk and                 Yong Li and                 Amy J. Lee and                 Anisoara Nica},    editor    = {Alex Delis and                 Christos Faloutsos and                 Shahram Ghandeharizadeh},    title     = {Evolvable View Environment (EVE): Non-Equivalent View Maintenance                 under Schema Changes},    booktitle = {SIGMOD 1999, Proceedings ACM SIGMOD International Conference                 on Management of Data, June 1-3, 1999, Philadephia, Pennsylvania,                 USA},    publisher = {ACM Press},    year      = {1999},    isbn      = {1-58113-084-8},    pages     = {553-555},    crossref  = {DBLP:conf/sigmod/99},    bibsource = {DBLP, http://dblp.uni-trier.de} } }, Copyright(C) 2000 ACM