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International Conference on Sustainable Power Generation and Supply

作者： Liu, Haitao Zhao, Jianghe Wang, Liyan Lv, Guangxian Ji, Yafei CEPRI Beijing 100192 Peoples R China

ISBN: (纸本)9781424449347

The construction of "digital distribution network" needs to connect multitudinous information islands in the entire distribution networks and implement the information integration and resource harmonization of multi-heterogeneous distributed systems. The data sharing and exchanging between correlated systems of distribution in China and the characteristic and advantage of data integration technology based on native xml database (NXD) are analyzed. A scheme of constructing data integration platform of the digital distribution network based on NXD technology is proposed, and the platform functions, architecture and key technologies are studied. The integration platform constructs unified digital distribution model and data service bus using xml as information description model, establishes the data warehouse in accord with digital distribution model by the NXD, and realizes information exchange by unified data access mode. The NXD-based data integration scheme can supply excellent connectivity for various applications and well meet the requirement on information integration of digital distribution network.

关键词： Digital distribution network Data sharing and exchanging Information integration native xml database

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Designing a high-performance database engine for the 'Db4xml' native xml database system

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JOURNAL OF SYSTEMS AND SOFTWARE 2004年第1-2期69卷 87-104页

作者： Sipani, S Verma, K Miller, JA Aleman-Meza, B Univ Georgia Boyd Grad Studies Res Ctr 415 Dept Comp Sci Athens GA 30602 USA

eXtensible Markup Language (xml) is fast becoming the common electronic data interchange language between applications. In this paper, we describe a database engine called 'Db4xml', which provides storage for xml documents in native format. Db4xml is a high performance, main memory resident database engine. Db4xml is being used as a testbed for comparing various query evaluation techniques. The use of wild card (*, ?, '//', etc.) in the path expressions of a query allows users to query documents whose structural information is not available. This paper lists different techniques that can be used to evaluate generalized path expressions (GPE) and presents a performance comparison of the same. A preliminary performance study of the effect of using concurrency control techniques on the various query evaluation techniques is also performed. This paper briefly discusses a suitable recovery technique for the database engine. (C) 2003 Elsevier Inc. All rights reserved.

关键词： native xml database database engine transaction management concurrency control performance evaluation

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Efficient Preprocesses for Fast Storage and Query Retrieval in native xml database

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IETE TECHNICAL REVIEW 2009年第1期26卷 28-40页

作者： Su-Cheng, Haw Lee, Chien-Sing Multimedia Univ Fac Informat Technol Malaysia Cyberjaya Malaysia

xml (extensible mark-up language) has emerged as one of the popular data representation standards for information storage and -exchange. In this paper, we propose an extended INLAB architecture, INLAB2, focusing on preprocessing the xml -document for fast native storage and accurate query retrieval. Firstly, we propose our xParse parser to check the well-formedness of an xml document. Next, we use a ( self-end) labeling scheme to encode each -element in the xml database, by its positional information, to establish parent-child (P-C) or -ancestor-descendant (A-D) relationships between nodes. Subsequently, our TwigINLAB2 algorithm is used to optimize query retrieval. TwigINLAB2 is a generalization of TwigStack, the stack-based algorithm for matching twig query. However, the TwigStack algorithm is efficient for A-D relationship queries only. Thus, in order to overcome this limitation, we enhance query retrieval by utilizing indices to speed up the matching and merging phases. Experimental results indicate that TwigINLAB2 can, on an average, process twig queries 23 better than the TwigStack algorithm and 10 better than TwigINLAB1, in terms of execution time.

关键词： Indexing Labeling native xml database Retrieval Storage xml query

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native xml database of Design and Realization Based on EJB Platform

Native XML database of Design and Realization Based on EJB P...

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2011 International Conference on Computers, Communications, Control and Automation

作者： Zhang jie-xin Yang Xiao-mei GuangXi Economic Management Cadre College

ISBN: (纸本)9781612841021

Based on the validated definition of OCL-Extension proposed model transformation framework, given the specific expression of the general type described in this semantic framework to design transformation rules from a platform-independent model to platform component model of EJB, to achieve platform-independent model to the EJB component model transformation platform, the project manager had stored xml representation EJB PSM model, based on this feature so use native xml database management and maintenance, database design can be seen through the example shows a complete, no loss of information, to automatic conversion, optimization of the traditional database, with higher data efficiency.

关键词： PIM PSM OCL-Extension EJB native xml database

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Design and implementation of a native xml database based on xml filter scheme

Design and implementation of a Native XML database based on ...

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International Computer Conference on Wavelet Active Media Technology and Information Processing

作者： Xu, Gaochao Fu, Xiaodong Hu, Liang Wei, Xiaohui Liu, Yang Jilin Univ Coll Comp Sci & Technol Changchun 130012 Peoples R China

ISBN: (纸本)9812700420

The design and implementation of a native xml database called XManager is presented in this paper. XManager covers most of the native xml database features. XManager implements a filter scheme based on xml, which makes XManager having a strong micro kernel. Based on this scheme, XManager found an open environment;any functions can be added as plug-ins. This scheme also gives XManager good performance. The experimental results show that XManager is much better than the well-known apache xml database XIndice on indexing and querying collection of xml documents.

关键词： xml native xml database XQuery XPath

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Comparison on Performance of Text-Based and Model-Based Architecture in Open Source native xml database 4

Comparison on Performance of Text-Based and Model-Based Arch...

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4th IEEE International Conference on Signal and Image Processing (ICSIP)

作者： Chau, Kien Tsong He, QianLing Hu, XuQing Wu, Rui Univ Sains Malaysia Ctr Instruct Technol & Multimedia George Town 11800 Malaysia Xiamen Univ Malaysia Dept Informat & Commun Technol Jalan Sunsuria Sepang 43900 Selangor Malaysia

ISBN: (纸本)9781728136608

A large number of organisations today choose xml as standard format for business transactional documents. Such documents can be natively processed by open source native xml database based on either text-based or model-based storage architectures. This paper presents a comparative analysis of these two architectures in terms of storage and query performance in handling xml documents. In specific, the paper compares Berkeley DB xml, eXist and dbxml performance. Three dependable documents were deployed for testing purposes and investigation was directed to focus on the speed of executing storage instructions and speed of executing querying instructions. In data analysis, line chart and histogram were utilised to reflect the trend of the processing performance of the database graphically. The result reveals that text-based architecture outperformed in storage operation whereas model-based architecture performed better on query operation.

关键词： native xml database text-based model-based performance evaluation NXD

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Going native: Indexing architecture of eXist-db_An Open Source native xml database system

Going Native: Indexing architecture of eXist-db_An Open Sour...

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IEEE International Conference of Region 10 (TENCON)

作者： Lazim, Raghad Yaseen Kamaludin, Adzhar UMP Fac Comp Syst & Software Engn Pahang Malaysia

ISBN: (纸本)9781479928255;9781479928279

xml is a markup language specifically designed for the Internet, and it has become the standard for represent and exchange the data on the Internet. With the development of the Internet and day by day, large amount of xml documents are being added to the network continuously in various application domains. Thus, it is become necessary to work out how to create a way to store and manage xml data efficiently inside the databases. There are two methods to represent xml in the databases: (1) xml-Enabled databases which designed for structured data (xml is semi-structured data). And (2) native xml databases or which designed specifically to store any xml document (structured and semi-structured data). The difference between the nature of the database structure and xml data structure became an important research topic, and this led to emergence native xml database. This paper presents the indexing architecture of eXist, an Open Source native xml database system.

关键词： eXist native xml database xml Query

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native xml database Design and Realization based on MDA

Native XML Database Design and Realization based on MDA

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2010 2nd IEEE International Conference on Information Management and Engineering(2010年IEEE第二届信息管理与工程国际会议 IEEE ICIME 2010)

作者： Yang Xiao-mei Dai Heng GuangXi Economic Management Cadre CollegeGuangxi Nanning 530001line 3: City Country School of Computer Electronics &Information Guangxi University Guangxi Nanning 530004

It originated in the use of ROSE tools, based on MDA development system method, when the model conversion was found that the model can not be automatically converted, for example, the length of type need be completed manually in the Relational database. The paper advanced through XMI standard, xml had selfdescriptive and platformindependent, in the XMI/xml platform technology support, platform independent model will be converted into platform specialize model, after model transformation exported xml Schema, the last they were automatically generated xml documents through the xml editor, which will select native xml database for the maintenance and management. Through concrete examples verify that the design can realize the length of data types that can automatically convert, and optimize the traditional database, and the data had a higher efficiency.

关键词： XMI xml xml Schema native xml database MDA

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Storage Model of native xml database based on Object-Oriented database

Storage Model of Native XML Database based on Object-Oriente...

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International Conference on Measurement, Instrumentation and Automation (ICMIA 2012)

作者： Zhang Xue-min Nie Hua-bei Hubei Engn Univ Sch Comp & Informat Sci Xiaogan City Hubei Province Peoples R China

ISBN: (纸本)9783037855461

Storage for xml is a main research of native xml database. native xml database has many different physical storage patterns, and their corresponding storage models are different. Based on defining the conceptions of native xml database, storage tactics and storage model, the paper describe the storage model based on object oriented database.

关键词： xml DTD native xml database Storage Model

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A Pagination-Based Index Structure on a native xml database

A Pagination-Based Index Structure on a Native XML Database

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2011 3rd International Conference on Computer Research and Development(ICCRD 2011)

作者： Xinyuan Zhao Shashi K.Gadia Department of Computer Science Iowa State University Ames IowaUnited States

How to retrieve and query large xml documents efficiently has become a challenge in the database field for several years. A few efforts have been made in the past to address this *** this paper, we present a novel approach using pagination technique and index structure in a native xml database system named CanStoreX. The system is able to handle very large xml documents efficiently using only a small amount of memory space. The experimental results have shown that the index structure proposed in this paper could dramatically improve the performance of the XQuery engine on a pagination based native xml storage.

关键词： native xml database pagination algorithm index structure XQuery DOM API

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