(34.204.201.220) 您好!臺灣時間:2021/04/20 13:07
字體大小: 字級放大   字級縮小   預設字形  
回查詢結果

詳目顯示:::

我願授權國圖
: 
twitterline
研究生:張伯齡
研究生(外文):Po-Ling Chang
論文名稱:使用物件導向資料庫儲存與查詢RDF文件的方法
論文名稱(外文):Storing and Querying RDF Documents in an Object-Oriented DBMS
指導教授:趙景明趙景明引用關係
指導教授(外文):Ching-Ming Chao
學位類別:碩士
校院名稱:東吳大學
系所名稱:資訊科學系
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2007
畢業學年度:95
語文別:英文
論文頁數:60
中文關鍵詞:generic RDF APIRDSMRDFXMLSPARQL
外文關鍵詞:generic RDF APIRDSMRDFXMLSPARQL
相關次數:
  • 被引用被引用:0
  • 點閱點閱:330
  • 評分評分:系統版面圖檔系統版面圖檔系統版面圖檔系統版面圖檔系統版面圖檔
  • 下載下載:0
  • 收藏至我的研究室書目清單書目收藏:0
資源描述框架(Resource Description Framework,RDF)是用來處理元資料(metadata)
的基礎。在全球資訊網(WWW)上,應用程式能夠透過元資料的協助,以交換機器所能
夠瞭解的資訊內容。由於RDF 的使用者能夠使用任何可能的編碼方式來表現以RDF 描述的資料內容,再加上 XML 的高度彈性化架構以及與機器平台無關的特性,皆使得XML 成為表現 RDF 文件內容最普遍的一種方法。
如何有效地將這些XML文件以及RDF 文件的內容儲存進實體資料庫以及進行查詢是目前相當重要的技術議題。在本文中,我們提出一個稱為RDF Data Store Model (RDSM)的物件導向式資料模型以及一個解析 RDF 文件的演算法,藉以儲存自RDF文件中所解析出來的資料內容。此外我們也提出了一組用以執行 RDF 資料查詢的基礎應用程式介面(API),並且結合W3C 組織所提出的SPARQL 查詢語言,藉以建構我們所需要的 RDF 資料查詢功能。最後我們將根據我們所提出的 RDF 資料儲存與查詢方法進行實際的系統建置,並將展示與評估其執行效能。
The Resource Description Framework (RDF) is a foundation for processing metadata, which provides interoperability between applications that exchange machine-understandable information on the World Wide Web (WWW). Because RDF users can use any possible syntax to encode data described in RDF, plus XML possesses the highly flexible hierarchical structure and the machine-independent characteristic, XML has become the most popular way to store and transport RDF documents.
Efficient storage and retrieval of XML documents (or, precisely, RDF/XML documents) in persistent data stores has become an important issue in computer technology. In this thesis, therefore, we propose an object-oriented data model, called the RDF Data Store Model (RDSM), for the storage of data extracted from RDF documents, as well as an RDF document decomposition algorithm for the extraction of data from RDF documents. In addition, we propose a generic RDF API that supports fundamental RDF data accessing and querying operations, and utilize the emerging W3C’s SPARQL as the high-level query language for the retrieval of RDF data. Finally, an experimental system is implemented to demonstrate the performance of the proposed approach.
ACKNOWLEDGEMENTS ................................................................................... i
Abstract ................................................................................................................. ii
摘 要..............................................................................................................iii
List of Figures ......................................................................................................vi
List of Tables .......................................................................................................vii
1. Introduction..................................................................................................... 1
1.1 Motivation and Objectives ................................................................... 1
1.2 Thesis Structure.................................................................................... 3
2. Related Works ................................................................................................. 4
2.1 Resource Description Framework (RDF) ............................................ 4
2.2 RDF Schema ........................................................................................ 8
2.3 Storage and Retrieval of XML Documents........................................ 10
3. Storing RDF Documents............................................................................... 13
3.1 Data Model for Storing RDF Data..................................................... 13
3.2 Decomposing RDF/XML Documents ............................................... 15
4. Querying RDF Documents ........................................................................... 20
4.1 Generic RDF API ............................................................................... 20
4.2 Querying RDF Data ........................................................................... 24
5. System Implementation and Performance Evaluation ................................. 26
5.1 The Design of the Experimental System ........................................... 27
5.2 Performance Comparison and Evaluation ......................................... 29
5.2.1 Performance Evaluation of Storing RDF Documents ............. 33
5.2.2 Performance Evaluation of Querying RDF Data..................... 35
6. Conclusions and Future Work....................................................................... 37
References ........................................................................................................... 38
Appendix A. The RDSM Schema in Jasmine ODQL ...................................... 41
Appendix B. The Code for The Experimental System..................................... 43
[1] Alexander, N. and Ravada, S., “RDF Object Type and Reification in the Database,” in
Proceedings of the 22nd International Conference on Data Engineering, pp. 93-93,
Atlanta, Georgia, USA, 2006.
[2] Beckett, D., Turtle - Terse RDF Triple Language, http://www.dajobe.org/2004/01/turtle/,
December 2006.
QRCODE
 
 
 
 
 
                                                                                                                                                                                                                                                                                                                                                                                                               
第一頁 上一頁 下一頁 最後一頁 top
系統版面圖檔 系統版面圖檔