在本論文中, 我們提出一個以乏晰數之a-切割運算為基礎, 在分散式關聯
資料庫環境中將乏晰查詢轉換成精確查詢的方法。另外, 在一個分散式關
聯資料庫環境中, 我們亦提出一個方法以處理當其中有一資料庫失效時之
不完全資料估計之方法。根據本文所提之方法, 我們亦實作了一個系統以
在分散式關聯資料庫環境中將使用者之乏晰查詢轉換成精確之查詢。我們
所提出的方法可以讓使用者在分散式關聯資料庫環境中以更彈性的方式來
作資訊擷取。

In this thesis, we propose a fuzzy query translation method
based on the a-cuts operations of fuzzy numbers to translate
fuzzy queries into precise queries in the distributed relational
databases environment. We also propose a method to estimate
incomplete data when the relations stored in a failed server
failed to access in thedistributed databases environment. Based
on these proposed methods, we have implemented a system to
translate fuzzy SQL queries to precise queries in the
distributed databases environment. The proposed methods allow
the users to deal with information retrieval in a more flexible
manner in thedistributed relational databases environment.