Computer Science ›› 2015, Vol. 42 ›› Issue (2): 157-160.doi: 10.11896/j.issn.1002-137X.2015.02.034

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VEMBP:A Novel Labeling Method for Updating on XML Data

QIN Zun-yue, CAI Guo-ming, ZHANG Bin-lian and TANG Yong   

  • Online:2018-11-14 Published:2018-11-14

Abstract: In order to improve the efficiency of the XML management system,some labeling schemas for the orderly XML tree were put forward,which realize processing of XML data under the condition of no need to access the original XML tree.The proposed labeling schemas for query have higher query performance,but the updating performance is poorer.Some novel labeling schemas designed for updating permance sacrifice query efficiency and possesse larger labeling space.For higher updating efficiency and smaller labeling space at the same time no reducing query efficiency,a novel labeling schema called VEMBP(Vector Encoding Method Based of Prime) was proposed,in which vector indicates order relation and a prime indicates structure relation between nodes in XML tree,and then an algorithm was designed which realizes updating in the cases no sacrificing query efficiency and completely avoiding secondary coding.Meanwhile labeling space is also under control.The experimental results show that VEMBP processes better on updating efficiency without sacrificing query performance.

Key words: XML tree,VEMBP labeling,Query,Updating

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