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Optimized XML Storage in NXD Based on Tree-Structure Disassemble
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作者 LIU Yun-sheng WANG Yi ZHONG Hao 《Wuhan University Journal of Natural Sciences》 EI CAS 2006年第1期93-99,共7页
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 doc... 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. 展开更多
关键词 xml storage storage model NXD native xml database document trees regular expression
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