Implementing data cubes efficiently
SIGMOD '96 Proceedings of the 1996 ACM SIGMOD international conference on Management of data
The distributed information search component (Disco) and the World Wide Web
SIGMOD '97 Proceedings of the 1997 ACM SIGMOD international conference on Management of data
Foundations of algorithms using C++ pseudocode (2nd ed.)
Foundations of algorithms using C++ pseudocode (2nd ed.)
Your mediators need data conversion!
SIGMOD '98 Proceedings of the 1998 ACM SIGMOD international conference on Management of data
Capability based mediation in TSIMMIS
SIGMOD '98 Proceedings of the 1998 ACM SIGMOD international conference on Management of data
Introduction to Algorithms
Scaling Access to Heterogeneous Data Sources with DISCO
IEEE Transactions on Knowledge and Data Engineering
Selection of Views to Materialize in a Data Warehouse
ICDT '97 Proceedings of the 6th International Conference on Database Theory
Don't Scrap It, Wrap It! A Wrapper Architecture for Legacy Data Sources
VLDB '97 Proceedings of the 23rd International Conference on Very Large Data Bases
Materialized Views Selection in a Multidimensional Database
VLDB '97 Proceedings of the 23rd International Conference on Very Large Data Bases
Querying Heterogeneous Information Sources Using Source Descriptions
VLDB '96 Proceedings of the 22th International Conference on Very Large Data Bases
On the Computation of Multidimensional Aggregates
VLDB '96 Proceedings of the 22th International Conference on Very Large Data Bases
Algorithms for Materialized View Design in Data Warehousing Environment
VLDB '97 Proceedings of the 23rd International Conference on Very Large Data Bases
Answering queries using views: A survey
The VLDB Journal — The International Journal on Very Large Data Bases
An evolutionary approach to materialized views selection in a datawarehouse environment
IEEE Transactions on Systems, Man, and Cybernetics, Part C: Applications and Reviews
Efficient approaches for materialized views selection in a data warehouse
Information Sciences: an International Journal
A labeled-tree approach to semantic and structural data interoperability applied in hydrology domain
Information Sciences: an International Journal
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Recent research which purports to integrate distributed information has been concentrated on developing efficient mediator systems that not only provide a high degree of autonomy for local users, but also support the flexible integration of required functions for global users. However, there has been little attention paid to the implementation of the global views defined in a mediator. It is possible to speed up the execution of a global query if the previous result of a view is materialized in a mediator. Since the integration schema of a mediator can be incrementally modified and its usage can also be continuously varied, view usage should be carefully monitored to determine the optimized set of materialized views. Furthermore, as the number of views increases, the optimization process itself may take too long, so that the optimized set identified by a long optimization process becomes obsolete due to the recent change of view usage. This paper proposes the adaptive selection of a practical implementation method for each global view, such that available storage in a mediator can be highly utilized at any time. In order to differentiate the recent usage of a view from the past, the accumulated usage frequency of a view decays as time goes by. As a result, it is possible to change the implementation of each view adaptively with respect to the recent variation of view usage.