Integrationstrends bei Business-Intelligence-Systemen

”Business intelligence” (BI) is a term for information systems which support decision makers in providing business analysis on the basis of internal and external data. Until now there exist only few valid results of research about the actual level of usage and maturity of implemented BI-systems. A maturity model with five levels of evolutionary development can be used as a framework for an empirical survey. Aspects like business content, technology and organisational impact are recorded and evaluated. First conclusions about the gap between theoretical concepts and the state of enterprise-wide implementations of BI systems are deduced. These statistical findings lead to a BI benchmarking in specific industrial sectors and general strategic recommendations.     

Skalierbare Verarbeitung von XML mit Infonyte-DB

The emerging penetration of IT architectures with XML results in increasing XML data volumes. Available tools often fail in realizing scalable XML processing for large XML data volumes. Infonyte-DB, a product of Infonyte GmbH, is a high performance XML kernel that economizes on system resources and allows the processing of large XML data volumes.     

Rules about XML in XML

We developed three different rule-based systems, each designed to take XML as input and produce XML as output and manipulate intermediate facts as XML. They use very different methods of representing the XML during rule processing. Our series of benchmarks show when each representation is best. We also developed an XML language for representing the rules. The markup to recognize an input XML is a sample of that input; certain fields are replaced with special tags to match variables against text or subtrees within the input XML. The output or intermediate XML is also represented by a sample of the output XML. We also report on a graphical user interface developed for developing the rules in this special XML language.     

在Oracle XML DB中存储XML

本文研究在OracleXMLDB中存储XML。文中简要介绍了OracleXMLDB和其关键技术XMLType,并给出了一个应用实例。     

XML加密在XML安全性中的应用

针对用XML表示的信息在网络数据交换中存在的安全性问题．提出了使用XML加密机制来保证XML信息的安全性，并就如何加密不同粒度的XML信息进行了详细的讨论。     

剖析VeryCD工具条

如图1所示的VeryCD工具条．可能曾在不少朋友的电脑上出现过吧，其实它是一个加载项．那么．它是怎样入驻的呢？该怎样禁用、清除或彻底删除这些出现在我们电脑中加载项呢？     

Native XML数据库的文档编码机制研究

Native XML数据库快速查询的实现,可以采用基于XML文档编码的结构连接算法。而结构连接算法的实现需要对XML文档进行编码,以便于快速判断XML文档树结点之间的祖先后裔关系。在对现有编码机制进行综述的前提下,提出一种新的XML文档编码机制——前缀整除编码（PDIV）机制。该机制编码形式简单,只需要一个正整数即可充分表示结点在XML文档树中的位置信息;可以实现祖先后裔关系的快速查询;支持XML文档的更新操作;编码长度较短,编码长度约为o（ln（n））。     

基于XML扩展语法的模式分类研究

XML正在迅速成为WWW上采用的信息交换、表示和存储手段之一,论文对XML文档进行了多层次的抽象,得出了扩展XML语法和自动机等概念。作为一个应用,论文利用这一抽象对W3C推荐的两种最通用的模式进行上述语法观点的分类,从而有利于在不同的应用中选取合适的模式。     

XML应用的基石:XML解析技术

XML解析器是XML应用的基础，选择合适的XML解析技术对应用系统的性能有着较大的影响。通过对XML解析中3种主要解析技术的对比，分析和总结了XML解析器应用中的若干问题，归纳了应用系统设计中XML解析技术的选取原则，并提出了基于性能优化考虑的解析器设计思路。     

Recommending XML physical designs for XML databases

Database systems employ physical structures such as indexes and materialized views to improve query performance, potentially by orders of magnitude. It is therefore important for a database administrator to choose the appropriate configuration of these physical structures for a given database. XML database systems are increasingly being used to manage semi-structured data, and XML support has been added to commercial database systems. In this paper, we address the problem of automatic physical design for XML databases, which is the process of automatically selecting the best set of physical structures for a database and a query workload. We focus on recommending two types of physical structures: XML indexes and relational materialized views of XML data. We present a design advisor for recommending XML indexes, one for recommending materialized views, and an integrated design advisor that recommends both indexes and materialized views. A key characteristic of our advisors is that they are tightly coupled with the query optimizer of the database system, and they rely on the optimizer for enumerating and evaluating physical designs. We have implemented our advisors in a prototype version of IBM DB2 V9, and we experimentally demonstrate the effectiveness of their recommendations using this implementation.     

XML技术在网上银行中的应用

XML是目前Internet应用和研究的热点，基于XML的商务和金融网站已经成为现实。文章以华夏网上银行为例，分析和阐述了XML技术在互联网上的应用，特别是在网上银行中的应用。     

基于XML Pipeline的XML发布框架

在基于XML的企业应用系统中,数据发布过程实际上可看成是XML的处理流程,因此需要一种统一的语言将流程描述出来.XML Pipeline Definition Language的出现为该问题的解决提供了一种切实可行的方案.本文介绍了XML Pipeline及其在构建XML发布框架中的应用.通过基于XML Pipeline的发布框架,能将数据发布的开发提升到面向模型的层次,避免重复烦琐的代码泛滥,优化了体系结构和大幅提高开发效率.     

XML数据索引技术

对XML数据建立有效的索引,是左右XML数据处理性能的重要因素.深入地讨论了目前XML索引技术的研究现状,将XML索引技术分为两大类:节点记录类索引(本身还可以分为3个小的类型)和结构摘要类索引.根据XML数据查询处理效率以及XML数据修改对XML索引的要求,讨论了相关XML索引方法的优点和不足,并归结出XML索引后续研究的3个方向:XML结构信息的获取,路径信息的多维处理,数据修改合法性的有效支持,以及涉及能够同时有效满足XML查询和信息获取的索引.     

利用XML DOM创建强大的XML应用

介绍了DOM产生的背景和DOM规范，并讨论了利用XML DOM技术来实现动态地创建文档，以及遍历文档结构、添加、修改、删除文档内容，改变文档的显示方式等方法，最后给出了制作XML网页应用的实例和步骤。