摘要
隨著網際網路的普及,資料可於組織內透過網路連結,將分散於各地的資料庫伺服器連結;亦即可在組織內架設一分散式資料庫,提供使用者多元化的查詢服務。而其最關鍵問題即爲如何在數個資料庫中決定檔案的儲存位置,使使用者的總査詢時間爲最短。本研究提出一資料檔配置模式,在有限的空間資源及允許資料檔多重備份的情況下,決定網路中最佳的資料檔配置策略。此模式的計算效率比現有方法[2][4][5]高出許多。
Abstract
With popularity of Internet, data can be linked with distributed databases by building a distributed database. One of most critical problems in distributed database design is to decide the locations of several DBs thus to minimize the total time of users’ queries.This study proposes a data file allocation model under limited resources. The proposed model has better computational efficiency comparing with current models [2][4][5].
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