WebDB Hypermedia Database System
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- LI Wen-Syan
- Multimedia Software Dapartment, C&C Research Laboratories, NEC USA, Inc.
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- WU Yi-Leh
- Multimedia Software Dapartment, C&C Research Laboratories, NEC USA, Inc.
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- SHIM Junho
- Multimedia Software Dapartment, C&C Research Laboratories, NEC USA, Inc.
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- HIRATA Kyoji
- Multimedia Software Dapartment, C&C Research Laboratories, NEC USA, Inc.
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- MUKHERJEA Sougata
- Multimedia Software Dapartment, C&C Research Laboratories, NEC USA, Inc.
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- AGRAWAL Divyakant
- Multimedia Software Dapartment, C&C Research Laboratories, NEC USA, Inc.
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- HARA Yoshinori
- Multimedia Software Dapartment, C&C Research Laboratories, NEC USA, Inc.
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- ITO Reiko
- 5th Development Department, 2nd Computers Software Division, NEC Corporation
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- KIMURA Yutaka
- 5th Development Department, 2nd Computers Software Division, NEC Corporation
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- SHIMAZU Kazuyuki
- 5th Development Department, 2nd Computers Software Division, NEC Corporation
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- SAITO Yukiyoshi
- 5th Development Department, 2nd Computers Software Division, NEC Corporation
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Abstract
The Web is a collection of multimedia documents in the form of HTML pages connected through hyperlinks. Unlike most search engines, which focus on information retrieval based on keywords, WebDB aims at supporting database-like comprehensive query functionalities as well navigation, and document generation functionalities with customizability. To support hypermedia database functionalities, we augment the traditional concepts of tables in relational databases and classes in object-oriented databases with notions of document formats and navigation. We design WQL (Web Query Language) as an HTML document manipulation language. WQL language statements contain two parts: SELECT...FROM...WHERE clauses for specifying retrieval of data contents from hypermedia databases and CREATE...AS... clauses for specifying the output HTML format and navigation of the query results. This paper presents the architecture of WebDB and its functionalities. The extension to SQL for hypermedia document manipulation, query, and navigation and implementation on NEC PERCIO OODBMS are described in detail.
Journal
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- IEICETrans. INF.&SYST.
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IEICETrans. INF.&SYST. 82 (1), 266-277, 1999-01-25
The Institute of Electronics, Information and Communication Engineers
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Details 詳細情報について
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- CRID
- 1572543027347889408
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- NII Article ID
- 110003210061
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- NII Book ID
- AA10826272
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- ISSN
- 09168532
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- Text Lang
- en
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- Data Source
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- CiNii Articles