With the development of computer network technology , enterprises start to develop many application system based on various software and hardware platform , consequently many abundant data source are accumulated , including structured data in database , non - structured data in file system , semi - structured data in web service . in the sake of avoiding reconstructing and wasting of data source , enterprises are eager to integrate these heterogeneous data source , which are separated in the locations and self - managed in management and heterogeneous in data module 随着计算机及网络技术的快速发展,各企业单位开发了大量的软硬件平台各异的应用系统,在各种应用系统下又积累了丰富的数据资源,如数据库中的结构化数据、文件系统中的非结构化数据、 web系统中的半结构化数据等,这些数据资源由于软硬件平台各异、数据模型各异而形成了异构数据。
With the rapid development of web service these years , xml ( extensible markup language ) has played an active role in the field of data storage as well as data exchange . more and more semi - structure data has been represented by xml and xml has become an important criteria of data representation and data exchange on internet 随着近年来webservice的蓬勃发展, xml ( extensiblemarkuplanguage )越来越多地活跃在数据交换和存储领域,用xml表示的半结构化数据得到越来越普遍的应用, xml已经成为internet上信息表示和交换的重要标准。
The study adopted multiple research methods , such like case study , semi - structured interview , in - depth interview , group interview , structured questionnaire , and collecting the second - hand materials etc . the main conclusions are : the sugarcane industry is the pillar industries in xiangzhou county and it is the main sources of local fiscal revenues and local farmer ' s income 本文主要方法采用案例研究、半结构访谈、个体访谈、小组座谈、问卷调查、二手资料的收集等方法。主要结果和结论是:蔗糖业是象州县经济的支柱产业,是地方财政收入和农民群众增收的主要来源,是今后继续发展的优势产业。