基于XML的电子病历数据模式研究

研究提出了基于XML的电子病历数据的建模方法:首先,抽象出电子病历系统中主要数据概念,并将其数据结构和关系图形化,建立其概念模型;然后,根据建立的概念模型到UML的映射机制,建立电子病历数据UML对象模型;最后,根据定义的UML模型到XML Schema的映射机制,实现UML方法描述的信息数据对象模型到XML Schema的转换,从而建立了基于XML Schema的电子病历数据模式.     

一种XML概念模型-XUML

由于XML已成为Web上表示结构化和半结构化数据的标准。设计XML模式的方法变得更加重要。为了设计或集成XML模式，常常需要基于合适的概念模型。本文分析了对XML概念模型的需求；提出了一种新的XML概念模型：XUML，并说明了XUML的主要特征和优点：能更明确地表示“包含”语义，支持“业务组件”概念，能在多级上下文中说明数据依赖，基于UML2标准；最后结合实例介绍了一种实现XUML的方法。     

一种UML模型到XML模型的转换方法

为了把UML模型用XML描述出来,可以从模型转换的角度来考虑这个问题,把XML描述结果当作XML模型考虑。利用集合的概念定义了一个UML源模型,并用构造树的形式描述了UML基本模型元素的结构。根据构造树的描述定义目标XML模型的XML Schema。提出了一种基于对模型元素实例集合的扫描和对模型元素构造树遍历的方法来进行UML模型到XML模型的自动转换。     

一种UML模型到XML模型的转换方法

为了把UML模型用XML描述出来，可以从模型转换的角度来考虑这个问题，把XML描述结果当作XML模型考虑。利用集合的概念定义了一个UML源模型，并用构造树的形式描述了UML基本模型元素的结构。根据构造树的描述定义目标XML模型的XML Schema。提出了一种基于对模型元素实例集合的扫描和对模型元素构造树遍历的方法来进行UML模型到XML模型的自动转换。     

基于XML的异构概念模型的格式转换研究

任务空间概念模型是仿真开发中的权威知识源,但由于不同概念模型开发人员所开发的模型的异构性,要使其在建模与仿真领域的仿真部件的互操作和可重用性方面发挥其作用,迫切需要在异构的本地格式概念模型之间提供一个规范化的中间格式,建立一种适合互操作的数据交换格式,使得整个仿真系统中的各个概念模型进行有效的互操作,并作到重用.而XML在数据描述与数据交换方面具有很大优势,因此提出了基于XML的异构概念模型的格式转换.通过对UML、本体论及XML相关技术问题的研究,给出了由UML到XML和由本体论到XML的格式转换过程及其操作方法.     

用UML设计XML文档模式

XML是新一代的置标语言,它定义了一种描述数据、交换数据的标准。W3CXMLSchema是定义和描述XML文档结构的模式语言。UML是一种得到广泛应用的标准对象建模语言。文章以B2C中的电子定单为例,描述了用UML设计XML文档模式的方法。     

基于XML的项目管理工作流一体化建模研究

针对企业大量业务流程经常变化的特点和管理问题,提出一种基于XML的项目管理工作流模型。对工作流管理联盟制定的工作流过程定义元模型进行了改进和简化,并给出了元模型的组成元素与相关属性;基于改进的工作流元模型,使用XML对工作流过程模型进行了定义;介绍了工作流引擎的主要设计思想和DOM4J解析方法。基于过站航班运行保障流程建模实验结果表明,所提出的基于XML的工作流模型能很好地表示任务节点及其关系,并且便于数据的传输和共享。     

UML映射为GML规则分析研究

GML语言是开放地理信息系统联合会指定的基于XML的空间数据编码规范,将成为构建未来开放的地理信息系统共享与互操作平台的基础。本文介绍了将UML转化为GML的通用规则,为基于GML建模提供了一种方法。     

基于UML的XML建模方法

针对由业务模型直接定义XML Schema存在较多的困难，提出了一种把UML技术用于XML Schema建模的方法。该方法通过领域建模定义了3层模型，即概念层模型、逻辑层模型和实现层模型，分别对应于业务模型的分析、设计及实现阶段，并对各层模型之间的转换方法进行了有效的探讨。     

一种基于概念模型的切点定义方法

针对面向方面编程中存在的切点软化问题,提出一种可视化的切点定义方法,切点定义依据一种概念模型而不再依赖于基础程序的具体结构,实现了切点定义与基础程序的解耦,提高了切点鲁棒性。概念模型是对AspectJ切点表达式的可视化的抽象概括,通过扩展UML元模型实现,文中称之为切点模型。同时,扩展了Rational Rose,使其支持切点模型的建模,并实现了由切点模型自动生成方面框架代码。     

Specifying OLAP Cubes on XML Data

On-Line Analytical Processing (OLAP) enables analysts to gain insight about data through fast and interactive access to a variety of possible views on information, organized in a dimensional model. The demand for data integration is rapidly becoming larger as more and more information sources appear in modern enterprises. In the data warehousing approach, selected information is extracted in advance and stored in a repository, yielding good query performance. However, in many situations a logical (rather than physical) integration of data is preferable. Previous web-based data integration efforts have focused almost exclusively on the logical level of data models, creating a need for techniques focused on the conceptual level. Also, previous integration techniques for web-based data have not addressed the special needs of OLAP tools such as handling dimensions with hierarchies. Extensible Markup Language (XML) is fast becoming the new standard for data representation and exchange on the World Wide Web. The rapid emergence of XML data on the web, e.g., business-to-business (B2B) e-commerce, is making it necessary for OLAP and other data analysis tools to handle XML data as well as traditional data formats.Based on a real-world case study, this paper presents an approach to specification of OLAP DBs based on web data. Unlike previous work, this approach takes special OLAP issues such as dimension hierarchies and correct aggregation of data into account. Also, the approach works on the conceptual level, using Unified Modeling Language (UML) as a basis for so-called UML snowflake diagrams that precisely capture the multidimensional structure of the data. An integration architecture that allows the logical integration of XML and relational data sources for use by OLAP tools is also presented.     

Fuzzy XML data modeling with the UML and relational data models

Information imprecision and uncertainty exist in many real-world applications and for this reason fuzzy data modeling has been extensively investigated in various data models. Currently, huge amounts of electronic data are available on the Internet, and XML has been the de facto standard of information representation and exchange over the Web. This paper focuses on fuzzy XML data modeling, which is mainly involved in the representation model of the fuzzy XML, its conceptual design, and its storage in databases. Based on “possibility distribution theory”, we developed this fuzzy XML data model. We developed this fuzzy UML data model to design the fuzzy XML model conceptually. We investigated the formal conversions from the fuzzy UML model to the fuzzy XML model and the formal mapping from the fuzzy XML model to the fuzzy relational databases.     

Converting XML DTDs to UML diagrams for conceptual data integration

Extensible Markup Language (XML) is fast becoming the new standard for data representation and exchange on the World Wide Web, e.g., in B2B e-commerce. Modern enterprises need to combine data from many sources in order to answer important business questions, creating a need for integration of web-based XML data. Previous web-based data integration efforts have focused almost exclusively on the logical level of data models, creating a need for techniques that focus on the conceptual level in order to communicate the structure and properties of the available data to users at a higher level of abstraction. The most widely used conceptual model at the moment is the Unified Modeling Language (UML).

This paper presents algorithms for automatically constructing UML diagrams from XML DTDs, enabling fast and easy graphical browsing of XML data sources on the web. The algorithms capture important semantic properties of the XML data such as precise cardinalities and aggregation (containment) relationships between the data elements. As a motivating application, it is shown how the generated diagrams can be used for the conceptual design of data warehouses based on web data, and an integration architecture is presented. The choice of data warehouses and On-Line Analytical Processing as the motivating application is another distinguishing feature of the presented approach.     

A UML profile for multidimensional modeling in data warehouses

The multidimensional (MD) modeling, which is the foundation of data warehouses (DWs), MD databases, and On-Line Analytical Processing (OLAP) applications, is based on several properties different from those in traditional database modeling. In the past few years, there have been some proposals, providing their own formal and graphical notations, for representing the main MD properties at the conceptual level. However, unfortunately none of them has been accepted as a standard for conceptual MD modeling.

In this paper, we present an extension of the Unified Modeling Language (UML) using a UML profile. This profile is defined by a set of stereotypes, constraints and tagged values to elegantly represent main MD properties at the conceptual level. We make use of the Object Constraint Language (OCL) to specify the constraints attached to the defined stereotypes, thereby avoiding an arbitrary use of these stereotypes. We have based our proposal in UML for two main reasons: (i) UML is a well known standard modeling language known by most database designers, thereby designers can avoid learning a new notation, and (ii) UML can be easily extended so that it can be tailored for a specific domain with concrete peculiarities such as the multidimensional modeling for data warehouses. Moreover, our proposal is Model Driven Architecture (MDA) compliant and we use the Query View Transformation (QVT) approach for an automatic generation of the implementation in a target platform. Throughout the paper, we will describe how to easily accomplish the MD modeling of DWs at the conceptual level. Finally, we show how to use our extension in Rational Rose for MD modeling.     

Visio对象模型到XML模式的转换研究

为了规范供电企业信息系统互联互通的问题,韶关供电局建立了基于公共信息模型的各系统数据变换标准,该数据交换标准采用UML技术进行对象建模,而如何把对象模型转换成应用系统间数据交换的标准XML描述是较关键的技术.     

基于UML顺序图测试用例的生成

在分析UML模型可测试性的基础上,提出一种基于UML顺序图模型生成分布式系统测试用例方法,以系统软件配置项为对象对分布式应用典型场景进行模拟,通过解析MDL文件给出对顺序图XML的建模方案,实现一个自动生成分布式系统测试用例工具。实验结果表明,生成的测试用例达到判定覆盖的标准,具有良好的应用前景。     

基于语义的可视化信息描述工具SUDTI的设计与实现*

在资源广域分布的环境中,对各种异构信息进行一体化描述是进行有效信息集成和提供高效信息服务的基础。提出了一种基于概念模型和元数据的一体化信息描述模型,并设计实现了基于该模型的可视化描述工具SUDTI。SUDTI以上述描述模型为基础,以XML语言作为描述载体存储描述结果,以扩展的UML“类图”的图示化符号作为可视化的描述语言,可以满足各种信息系统对异构信息描述和集成的需要。     

基于知识的UML图形文档自动生成

基于领域本体的需求获取使得用领域术语描述用户需求,并进行应用模型的自动分析成为可能,以尽可能地保证需求描述的正确性和完整性。从以领域概念为背景的应用模型,到以软件概念为基础的应用软件模型,是需求工程要完成的一个实质性跨越。UML是目前软件需求描述的一个实际上的标准。该文主要论述了从基于领域本体的应用需求描述到基于UML的软件需求文档的自动转换过程,文章提出建立从领域本体概念到UML概念映射规则库,以及根据UML概念填写用XML表示的UML图元模板的规则库,设计并实现了一个基于规则的,从应用需求概念到UML图元模板的自动转换工具。