| WWW分布数据源研究——数据模型和查询语言* |
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| 引用本文： | 陈 滢,徐宏炳,王能斌. WWW分布数据源研究——数据模型和查询语言*[J]. 软件学报, 1998, 9(8): 566-573 |
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| 作者姓名： | 陈 滢 徐宏炳 王能斌 |
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| 作者单位： | 东南大学计算机科学与工程系,南京,210096 |
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| 摘 要： | 该提出了分布式ＷＷＷ（ｗｏｒｌｄ－ｗｉｄｅ ｗｅｂ）数据源ＷＷＷＤＳ（ＷＷＷ ｄａｔａ ｓｏｕｒｃｅｓ）概念，详细介绍了ＷＷＷＤＳ的数据模型，该数据模型包括节点、节点空器、节点图和链接点等，简单且具有扩展性，同时提出相应的查询能力强的查询语言ＷＷＷＱＬ（ＷＷＷ ｑｕｅｒｙ ｌａｎｇｕａｇｅ），并进一步探讨了查询处理和优化问题。
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| 关 键 词： | WWW 分布数据源 数据模型 查询语言 Internet网 |
| 收稿时间： | 1997-06-02 |
| 修稿时间： | 1997-08-05 |
Towards Globalization of Distributed Data Sources over WWW--Data Model and Query Language |
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| CHEN Ying,XU Hong-bing and WANG Neng-bin. Towards Globalization of Distributed Data Sources over WWW--Data Model and Query Language[J]. Journal of Software, 1998, 9(8): 566-573 |
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| Authors: | CHEN Ying XU Hong-bing WANG Neng-bin |
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| Affiliation: | Department of Computer Science and Engineering Southeast University Nanjing 210096 |
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| Abstract: | In this paper, the concept of global distributed data sources over WWW(WWWDS) is introduced. A simple and extensible data model based on node, node container, node graph and link points are discussed in details. A powerful SQL like query language (WWWQL) for WWWDS is introduced and the query processing and optimization technology for WWWQL are discussed as well. |
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| Keywords: | World Wide web distributed data sources data model query processing and optimization quality of query. |
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