A scheduling of database migration in wide-area networks

✍ Scribed by Takahiro Hara; Masahiko Tsukamoto; Shojiro Nishio

• Publisher: John Wiley and Sons
• Year: 2000
• Tongue: English
• Weight: 266 KB
• Volume: 31
• Category: Article
• ISSN: 0882-1666
• DOI: 10.1002/1520-684x(200009)31:10<10::aid-scj2>3.0.co;2-p

✦ Synopsis

In broadband networks, appropriate use of database migration can drastically shorten the transaction processing time of a distributed database system. So far, we have proposed a transaction processing method based on database migration, where we have assumed that the network bandwidth is almost uniform and very broad over a whole network. However, WANs consist of various types of networks such as private LANs, narrowband public networks, and broadband backbones, and thus, it is difficult to control database migration in the granularity of the transaction and to execute database migration through networks other than backbones. Therefore, the proposed method cannot be used directly in such heterogeneous WAN environments. In this paper, we propose a scheduling method of database migration, which gives the shortest communication time for database operations, assuming that database migration is used in such heterogeneous WANs. We also discuss an implementation method of our proposed scheduling method in a practical environment.