Query execution strategies for missing data in distributed heterogeneous object databases

Jia Ling Koh*, Arbee L P Chen

*此作品的通信作者

研究成果: 書貢獻/報告類型會議論文篇章

2 引文 斯高帕斯(Scopus)

摘要

The problem of missing data arises in the distributed heterogeneous object databases because of the missing attribute conflict and the existence of null values. A set of algorithms are provided in this paper for query processing when the predicates in global queries involve missing data. For providing more informative answers to the users, the maybe results due to missing data are presented in addition to the certain results. One algorithm is designed based on the centralized approach in which the data are sent to the same site for integration and then processing. On the other hand, for reducing the response time, the localized approaches evaluate the predicates in different component databases in parallel. The proposed algorithms are compared and discussed by the simulation result on the total execution time and response time.

原文英語
主出版物標題Proceedings - International Conference on Distributed Computing Systems
發行者IEEE
頁面466-473
頁數8
出版狀態已發佈 - 1996
對外發佈
事件Proceedings of the 1996 16th International Conference on Distributed Computing Systems - Hong Kong, Hong Kong
持續時間: 1996 五月 271996 五月 30

其他

其他Proceedings of the 1996 16th International Conference on Distributed Computing Systems
城市Hong Kong, Hong Kong
期間1996/05/271996/05/30

ASJC Scopus subject areas

  • 硬體和架構

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