基于ESB的实时ETL系统的设计与实现

随着数据仓库技术的应用发展,企业对数据的处理要求更短的延迟,具有一定的实时需求,而目前的大部分系统都不具备该特性。提出了一种基于ESB平台的实时ETL解决方案,通过在ESB平台上运行的组件实现ETL功能,利用实时分区加载和更新实时数据。实验表明,该设计方案能够实现实时ETL功能,并具有良好的通用性和可扩展性。     

基于共享基础数据的信息系统集成方案

为解决企业信息系统集成中跨系统数据访问难的问题,提出基于共享基础数据资源的企业信息基础设施建设的理论基础、整体框架和实施方案.通过分析企业各种应用系统中所涉及的共享基础数据,构建基于共享基础数据资源平台的企业信息系统整体框架,并简单介绍按此方法实施的一个企业信息化基础设施建设的实际例子.     

企业OA系统的研究与开发

高效的办公是实现企业信息化中的重要环节。以Zend Studio和MySQL为技术支持,以B/S模式为架构,用软件工程的指导思想开发企业OA系统。实践证明利用该技术开发的基于Web端的企业OA系统简单易用,可以很好地提高企业办公的工作效率。     

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国有企业要建立符合审场经济要求的现代企业制度,中心任务是建立现代公司法人制度和组织制度,并逐步实现产权的多元化。但天然气行业具有由输送网络等形成的自然垄断特征和行业总公司具有的双重职能（行政职能、法人团体）,因而管理不明晰,产业政策不明确,给体制改革带来很大困难。这些难点主要有：①对现在天然气的成本不完全和油气资源的流动矿藏特征,如何进行资产评估和产权界定;②企业组织由行政机构演变而来,如何建立法人治理机构;③如何建立内、外部约束机制;④如何处理计划经济时代遗留下来的“大而全”、“小而全”、“企业办社会”、冗员过多等问题。最后提出了公司制改造方案和政府管制方式。     

一种双向元数据管理系统

作为企业级数据仓库的路径图,元数据在企业级数据仓库的建设中起着重要的作用。设计一个描述能力强、内容完善的元数据,是有效实现企业级数据仓库功能的重要环节。该文通过对双向体系元数据管理系统的研究,给出了一个企业级数据仓库的元数据管理的解决方案。该方案能够支持从企业级数据仓库子系统抽取元数据存储到元数据管理系统,同时也支持向数据仓库子系统提供其所需的元数据信息,解决诸多企业级数据仓库的运行管理问题,大大减少了企业级数据仓库的管理难度、保证了元数据的准确性、使得各子系统能高效地通信和稳定运行。     

中小型企业VPN网络的规划与设计

本文介绍了中小型企业VPN网络的规划与设计。通过这些规划与设计,VPN最终实现了中小型企业内部及远程访问的数据安全传输,解决中小型企业的网络连接的安全问题。     

Architecture analysis of enterprise systems modifiability - Models, analysis, and validation

Enterprise architecture (EA) models can be used in order to increase the general understanding of enterprise systems and to perform various kinds of analysis. This paper presents instantiated architectural models based on a metamodel for enterprise systems modifiability analysis, i.e. for assessing the cost of making changes to enterprise-wide systems. The instantiated architectural models detailed are based on 21 software change projects conducted at four large Nordic companies. Probabilistic relational models (PRMs) are used for formalizing the EA analysis approach. PRMs enable the combination of regular entity-relationship modeling aspects with means to perform enterprise architecture analysis under uncertainty. The modifiability metamodel employed in the analysis is validated with survey and workshop data (in total 110 experts were surveyed) and with the data collected in the 21 software change projects. Validation indicates that the modifiability metamodel contains the appropriate set of elements. It also indicates that the metamodel produces estimates within a 75% accuracy in 87% of the time and has a mean accuracy of 88% (when considering projects of 2000 man-hours or more).     

JCA适配器基础开发框架的设计与实现

针对当前JCA适配器开发难度大、效率低问题,提出一种JCA资源适配器的基础开发框架。该框架运用良好的设计模式,抽取并实现JCA规范中的系统契约和应用契约的核心部分,从而使开发人员只需实现和具体企业信息系统密切相关的功能特性,给出一套基于该基础框架的开发工具进行适配器的开发。实验结果表明,该框架能够有效地提高适配器的开发效率和质量。     

The relation between EA effectiveness and stakeholder satisfaction

Enterprise Architecture (EA) is increasingly being used by large organizations to get a grip on the complexity of their business processes, information systems and technical infrastructure. Although seen as an important instrument to help solve major organizational problems, effectively applying EA seems no easy task. Active participation of EA stakeholders is one of the main critical success factors for EA. This participation depends on the degree in which EA helps stakeholders achieve their individual goals. A highly related topic is effectiveness of EA, the degree in which EA helps to achieve the collective goals of the organization. In this article we present our work regarding EA stakeholder satisfaction and EA effectiveness, and compare these two topics. We found that, regarding EA, the individual goals of stakeholders map quite well onto the collective goals of the organization. In a case study we conducted, we found that the organization is primarily concerned with the final results of EA, while individual stakeholders also worry about the way the architects operate.