| Optimized XML Storage in NXD Based on Tree-Structure Disassemble |
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| 作者姓名： | LIU Yun-sheng WANG Yi ZHONG Hao |
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| 作者单位： | School of Computer Science and Technology, Huazhong University of Science and Technology, Wuhan 430074,Hubei, China |
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| 基金项目： | Supported by the National Natural Science Foundation of China （60073045） |
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| 摘 要： | Independent XML storage based on XSD （XML Schema Document） is adopted in NXD（Native XML Data base）, XMI. storage structure based on tree-structure disassemble and the algorithm used in dynamically updating XML document are provided in this paper. The main idea is that in term of data model of XML document, XML document is parsed to Document Structure-Tree with Hierarchical Model and Leaf-Data with Relation Model for storage. Simultaneously Proxy node is imported in order to solve the problem that XML data store in cross-blocks. And with XSD model information, sparse index is constructed to save storage space. It is proved that this storage structure could improve efficiency of XML document operation.
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| 关 键 词： | 数据库 XML 存储模型 NXD 文件树正则表达式 |
| 文章编号： | 1007-1202（2006）01-0093-07 |
| 收稿时间： | 2005-04-12 |
Optimized XML storage in NXD based on tree-structure disassemble |
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| LIU Yun-sheng WANG Yi ZHONG Hao.Optimized XML Storage in NXD Based on Tree-Structure Disassemble[J].Wuhan University Journal of Natural Sciences,2006,11(1):93-99. |
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| Authors: | Liu Yun-sheng Wang Yi Zhong Hao |
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| Institution: | (1) School of Computer Science and Technology, Huazhong University of Science and Technology, 430074 Wuhan Hubei, China |
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| Abstract: | Independent XML storage based on XSD (XML Schema Document) is adopted in NXD(Native XML Database), XML storage structure based on tree-structure disassemble and the algorithm used in dynamically updating XML document are provided in this paper. The main idea is that in term of data model of XML document, XML document is parsed to Document Structure-Tree with Hierarchical Model and Leaf-Data with Relation Model for storage. Simultaneously Proxy node is imported in order to solve the problem that XML data store in cross-blocks. And with XSD model information, sparse index is constructed to save storage space. It is proved that this storage structure could improve efficiency of XML document operation. |
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| Keywords: | XML storage storage model NXD (native XML database) document tree regular expression |
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