近年來，延伸標記語言資料庫已成為重要的研究課題，針對大量的XML文件的儲存與操作已有許多傑出的研究成果被提出，其中由於關聯式資料庫的普及與技術的成熟和穩定，大部份關於XML資料庫的研究成果都是以關聯式資料庫為基礎加以探討。本論文將提出一個XML資料庫系統的解決方案並加以實作，以提供高效能的XML資料存取。我們將以模式對映方法為基礎，設計並實作可支援各式應用的XML文件的轉換與儲存方法。針對使用者查詢的處理，我們也將提出一個以模版為基礎的查詢處理技術，可將使用者所下達的XQuery查詢轉換成所需的SQL指令，以便對儲存在關聯式資料庫中的XML資料進行查詢處理。

Extensible markup language (XML) has become an active research topic in recent years. Many excellent approaches have been proposed to store and manipulate a large amount of XML documents. Most of them are based on relational database systems, because of its popularity, maturity and reliability. In this paper, we will propose an XML database solution and related implementations to provide access of XML documents based on a relational database system. The proposed XML database system translates and stores XML documents according to model-mapping schemas which can support any sophisticated applications. We also propose a template-based XQuery processing technique to translate XQuery commands into the corresponding SQL commands such that the proposed XML database system can process user queries.

Abstract .......................... II
中文摘要........................... III
Contents........................... IV
List of Figures.................... VI
Chapter 1 Introduction ............ 1
Chapter 2 Related Work............. 4
2.1 XML Data Model ................ 4
2.2 Model-Mapping Approaches ...... 7
2.2.1 XParent...................... 8
2.2.2 XPred ....................... 9
2.3 XQuery......................... 13
2.4 XML Database................... 15
Chapter 3 System Architecture ..... 16
3.1 User Interface................. 18
3.2 Data Accessor ................. 19
3.3 XML Parser..................... 19
3.4 Model-Mapper .................. 19
3.5 XQuery Parser.................. 20
3.6 Query Translator .............. 20
3.7 Template ...................... 21
3.8 Result Constructor ............ 24
Chapter 4 System Demonstration..... 25
4.1 Storage Function .............. 25
4.2 Search Function ............... 28
Chapter 5 Conclusions and Future Works ........38
5.1 Conclusions ................... 38
5.2 Future Works .................. 39
Bibliography....................... 40

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