A comparative analysis of methodologies for database schema integration
ACM Computing Surveys (CSUR)
Modern database systems
ACM Computing Surveys (CSUR)
Architectural mismatch or why it's hard to build systems out of existing parts
Proceedings of the 17th international conference on Software engineering
Experience assessing an architectural approach to large-scale systematic reuse
Proceedings of the 18th international conference on Software engineering
SIGMOD '98 Proceedings of the 1998 ACM SIGMOD international conference on Management of data
CQ: a personalized update monitoring toolkit
SIGMOD '98 Proceedings of the 1998 ACM SIGMOD international conference on Management of data
XML-based information mediation with MIX
SIGMOD '99 Proceedings of the 1999 ACM SIGMOD international conference on Management of data
Legacy systems migration in CelLEST
Proceedings of the 22nd international conference on Software engineering
Babel: representing business rules in XML for application integration
ICSE '01 Proceedings of the 23rd International Conference on Software Engineering
Object Exchange Across Heterogeneous Information Sources
ICDE '95 Proceedings of the Eleventh International Conference on Data Engineering
Database Integration in a Distributed Heterogeneous Database System
Proceedings of the Second International Conference on Data Engineering
Querying Heterogeneous Information Sources Using Source Descriptions
VLDB '96 Proceedings of the 22th International Conference on Very Large Data Bases
Task-Structure Based Mediation: The Travel-Planning Assistant Example
AI '00 Proceedings of the 13th Biennial Conference of the Canadian Society on Computational Studies of Intelligence: Advances in Artificial Intelligence
A Formal Foundation for Distributed Workflow Execution Based on State Charts
ICDT '97 Proceedings of the 6th International Conference on Database Theory
A Generic Integration Architecture for Cooperative Information Systems
COOPIS '96 Proceedings of the First IFCIS International Conference on Cooperative Information Systems
Looking at the Web through XML Glasses
COOPIS '99 Proceedings of the Fourth IECIS International Conference on Cooperative Information Systems
Mediation and Software Maintenance
Mediation and Software Maintenance
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One of the major problems in integrating independently developed applications is the divergence between the data and control-of-processing models assumed by these applications. Research on database integration has focused on establishing and maintaining a canonical schema on top of the schemas of the underlying databases. At the same time, web-accessible software systems have been adopting a multi-layer architecture style, with databases in the lowest tier, business logic in the middle tier and user interfaces in the top-most tier. However, as the time-to-market window shrinks, new software is presented with the challenge of reusing and integrating the functionalities of existing whole applications, instead of simply their database back-ends. The Babel framework provides support for specifying existing applications in terms of the functionalities they deliver and the data they manipulate. In addition, it supports the specification of the "logic" defining how these functionalities should be integrated. Based on these specifications, Babel produces a run-time mediator that monitors the behavior of the underlying applications, evaluates the defined logic on the global state of the integrated system, and generates triggers for new functionalities to be accomplished according to these rules.