A softbot-based interface to the Internet
Communications of the ACM
Data model and query evaluation in global information systems
Journal of Intelligent Information Systems - Special issue: networked information discovery and retrieval
Research problems in data warehousing
CIKM '95 Proceedings of the fourth international conference on Information and knowledge management
Query reformulation for dynamic information integration
Journal of Intelligent Information Systems - Special issue on intelligent integration of information
A Transparent Schema-Evolution System Based on Object-Oriented View Technology
IEEE Transactions on Knowledge and Data Engineering
Data Integration using Self-Maintainable Views
EDBT '96 Proceedings of the 5th International Conference on Extending Database Technology: Advances in Database Technology
A Transparent Object-Oriented Schema Change Approach Using View Evolution
ICDE '95 Proceedings of the Eleventh International Conference on Data Engineering
Object Exchange Across Heterogeneous Information Sources
ICDE '95 Proceedings of the Eleventh International Conference on Data Engineering
MedMaker: A Mediation System Based on Declarative Specifications
ICDE '96 Proceedings of the Twelfth International Conference on Data Engineering
COOPIS '97 Proceedings of the Second IFCIS International Conference on Cooperative Information Systems
Integrating the rewriting and ranking phases of view synchronization
Proceedings of the 1st ACM international workshop on Data warehousing and OLAP
Evolvable view environment (EVE): non-equivalent view maintenance under schema changes
SIGMOD '99 Proceedings of the 1999 ACM SIGMOD international conference on Management of data
The EVE Approach: View Synchronization in Dynamic Distributed Environments
IEEE Transactions on Knowledge and Data Engineering
The SDCC Framework For Integrating Existing Algorithms for Diverse Data Warehouse Maintenance Tasks
IDEAS '99 Proceedings of the 1999 International Symposium on Database Engineering & Applications
View Maintenance after View Synchronization
IDEAS '99 Proceedings of the 1999 International Symposium on Database Engineering & Applications
Parallel synchronization algorithms for concurrent data warehouse maintenance under schema changes
ICCOMP'05 Proceedings of the 9th WSEAS International Conference on Computers
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The maintenance of materialized views in large-scale environments composed of numerous heterogeneous information sources (ISs), such as the WWW, has importance for the new breed of information service providers. These applications face the problem that such large-scale environments are plagued with ISs not only continuously modifying their contents, but also their schemas and query capabilities. Current view technology assumes a static environment, in the sense that once the underlying environment upon which the view is defined changes its capabilities, views become undefined. This paper is the first attempt of addressing this problem, which we coin view synchronization. Our EVE (Evolvable View Environment) solution is capable of maintaining virtual repositories (views) under capabilities changes of the underlying sources in situations where current view technology would fail. In this paper, we introduce the key concepts of the EVE solution, in particular, the EVE architecture, a new flexible view specification language called Evolvable-SQL (short E-SQL), a Model for Information Source Descriptions (MISD), and our view synchronization algorithm (VSA). Examples to illustrate the key ideas of the EVE approach are given throughout the paper.