A snapshot differential refresh algorithm
SIGMOD '86 Proceedings of the 1986 ACM SIGMOD international conference on Management of data
Efficiently updating materialized views
SIGMOD '86 Proceedings of the 1986 ACM SIGMOD international conference on Management of data
A performance analysis of view materialization strategies
SIGMOD '87 Proceedings of the 1987 ACM SIGMOD international conference on Management of data
Maintaining views incrementally
SIGMOD '93 Proceedings of the 1993 ACM SIGMOD international conference on Management of data
Incremental maintenance of views with duplicates
SIGMOD '95 Proceedings of the 1995 ACM SIGMOD international conference on Management of data
Algorithms for deferred view maintenance
SIGMOD '96 Proceedings of the 1996 ACM SIGMOD international conference on Management of data
Efficient view maintenance at data warehouses
SIGMOD '97 Proceedings of the 1997 ACM SIGMOD international conference on Management of data
How to roll a join: asynchronous incremental view maintenance
SIGMOD '00 Proceedings of the 2000 ACM SIGMOD international conference on Management of data
Maintaining data warehouses over changing information sources
Communications of the ACM
Optimizing queries using materialized views: a practical, scalable solution
SIGMOD '01 Proceedings of the 2001 ACM SIGMOD international conference on Management of data
Making views self-maintainable for data warehousing
DIS '96 Proceedings of the fourth international conference on on Parallel and distributed information systems
Garlic: a new flavor of federated query processing for DB2
Proceedings of the 2002 ACM SIGMOD international conference on Management of data
Automating physical database design in a parallel database
Proceedings of the 2002 ACM SIGMOD international conference on Management of data
Mid-tier caching: the TimesTen approach
Proceedings of the 2002 ACM SIGMOD international conference on Management of data
Middle-tier database caching for e-business
Proceedings of the 2002 ACM SIGMOD international conference on Management of data
A self-managing data cache for edge-of-network web applications
Proceedings of the eleventh international conference on Information and knowledge management
SIGMOD '84 Proceedings of the 1984 ACM SIGMOD international conference on Management of data
Data Integration using Self-Maintainable Views
EDBT '96 Proceedings of the 5th International Conference on Extending Database Technology: Advances in Database Technology
Automated Selection of Materialized Views and Indexes in SQL Databases
VLDB '00 Proceedings of the 26th International Conference on Very Large Data Bases
DB2 Advisor: An Optimizer Smart Enough to Recommend its own Indexes
ICDE '00 Proceedings of the 16th International Conference on Data Engineering
MTCache: Transparent Mid-Tier Database Caching in SQL Server
ICDE '04 Proceedings of the 20th International Conference on Data Engineering
Relaxed currency and consistency: how to say "good enough" in SQL
SIGMOD '04 Proceedings of the 2004 ACM SIGMOD international conference on Management of data
Recommending Materialized Views and Indexes with IBM DB2 Design Advisor
ICAC '04 Proceedings of the First International Conference on Autonomic Computing
Load Balancing for Multi-tiered Database Systems through Autonomic Placement of Materialized Views
ICDE '06 Proceedings of the 22nd International Conference on Data Engineering
Relaxed-currency serializability for middle-tier caching and replication
Proceedings of the 2006 ACM SIGMOD international conference on Management of data
VLDB '80 Proceedings of the sixth international conference on Very Large Data Bases - Volume 6
Cache tables: paving the way for an adaptive database cache
VLDB '03 Proceedings of the 29th international conference on Very large data bases - Volume 29
CachePortal II: acceleration of very large scale data center-hosted database-driven web applications
VLDB '03 Proceedings of the 29th international conference on Very large data bases - Volume 29
DB2 design advisor: integrated automatic physical database design
VLDB '04 Proceedings of the Thirtieth international conference on Very large data bases - Volume 30
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Many large enterprises require access to distributed databases for business intelligence (BI) applications. Typically, distributed database are integrated into a centralized data warehouse for the benefit of easy maintenance. However, this approach needs to overcome the complexity of data loading and job scheduling as well as scalability issues. On the other hand, the approach of a fully federated system may not be feasible for data-intensive BI applications. The hybrid approach via intelligent data placement is more flexible and applicable than centralized or full-federation configurations. The current implementation of the hybrid approach to integrating distributed databases is to aggregate selected data from various remote sources as materialized views and cache them at the federation server to improve the performance of complex BI query workloads. In this paper, we propose an improvement that recommends Materialized Query Tables (MQTs) for backend servers for the benefits of load distribution and easy maintenance of aggregated data in conjunction with the current hybrid approach of data placement. Our approach considers the correlation between backend servers and recommends MQTs that are well coordinated among the backend servers and optimized for the workload. We also exploit the parallelism property among the backend servers to make our approach run almost linearly (in contrast to exponentially) with respect to the number of backend servers, without sacrificing its recommendation quality. Experimental evaluations validate the effectiveness and efficiency of our approach.