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  • 學位論文

文件庫查詢模式之研究

A Query Model Research on Document Base

指導教授 : 姚修慎
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摘要


在此論文中,我們運用非一階正規型資料模式和超本文鏈結的技術來處理 文件資料,設計一較具彈性的文件庫查詢語言S-SQL。一般而言,文件是 屬於非格式化的資料,關連式資料庫不適合用來處理這類資料。為了解決 此問題,我們利用概念化模式將文件模式化建立文件的概念化結構,以適 合於用非一階正規型資料模式來處理。概念化模式模式的主要目的乃在於 萃取出文件中具特殊用途的單元,如是的話將可支援更具彈性的查詢方式 如內容、及結構的查詢方式。除此之外,為了提供人們聯想的閱讀模式, 我們將超本文的鏈結觀念引進。不過因每個人思維不同,不同人對同一主 題的感受程度不盡相同。因此一般超本文系統事先設計的靜態鏈結不符所 需。在此我們將鏈結的功能看成函數,利用函數資料模式製作符合使用者 需求的動態函數鏈結。

並列摘要


In order to design a more flexible query language for document base, we apply non-first normal form (N1NF) data model and HyperText's link technology to handle documents data. Generally speaking, documents are unformatted data, it is not suitable for relational database to handle. To solve this problem , we use conceptual modeling to model documents and establish documents conceptual structure to make it suitable for non-first normal model to handle. The purpose of conceptual modeling is used to extract some components which have specific meaning for user so that we can use this structure for more flexible query patterns .For example, we can use document's content and structure to specify our query statement. Besides, we know that people always have idea processing model, this is similar to Hypertext's link concept. For different people they have different idea processing models, hence general Hypertext System's static links can not match this requirement. Here, we think Hypertext link as function and use functional data model to implement dynamic functional links to match the requirement of different users.

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