A Conveyor Algorithm for Complete Consistency of Materialized View in a Self-Maintenance

실체 뷰의 자기관리에서 완전일관성을 위한 컨베이어 알고리듬

  • Hong, In-Hoon (Department of Industrial Engineering, University of Incheon) ;
  • Kim, Yon-Soo (Department of Industrial Engineering, University of Incheon)
  • 홍인훈 (인천대학교 산업공학과) ;
  • 김연수 (인천대학교 산업공학과)
  • Received : 20020900
  • Accepted : 20030300
  • Published : 2003.06.30

Abstract

The On-Line Analytical Processing (OLAP) tools access data from the data warehouse for complex data analysis, such as multidimensional data analysis, and decision support activities. Current research has lead to new developments in all aspects of data warehousing, however, there are still a number of problems that need to be solved for making data warehousing effective. View maintenance, one of them, is to maintain view in response to updates in source data. Keeping the view consistent with updates to the base relations, however, can be expensive, since it may involve querying external sources where the base relations reside. In order to reduce maintenance costs, it is possible to maintain the views using information that is strictly local to the data warehouse. This process is usually referred to as "self-maintenance of views". A number of algorithm have been proposed for self maintenance of views where they keep some additional information in data warehouse in the form of auxiliary views. But those algorithms did not consider a consistency of materialized views using view self-maintenance. The purpose of this paper is to research consistency problem when self-maintenance of views is implemented. The proposed "conveyor algorithm" will resolved a complete consistency of materialized view using self-maintenance with considering network delay. The rationale for conveyor algorithm and performance characteristics are described in detail.

Keywords

References

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