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Registering Different DBMSs to Panorama with corba

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Wuhan University Journal of Natural Sciences 2001年第Z1期6卷 423-431页

作者： Sarem Mudar, Li Rui\|xuan, Xiao Wei\|jun, Lu Zheng\|ding School of Computer Science, Huazhong University of Science and Technology,Wuhan 430074, China School of Computer Science Huazhong University of Science and Technology Wuhan 430074 China

Recently, there is an increasing use of corba implementation in developing multidatabase systems. MIND and Panorama are some of the examples of multidatabase prototypes that have been implemented on the top of corba compliant namely ObjectBroker and VisiBroker respectively. They both aim to achieve interoperability among Oracle, Sybase and other different DBMSs through the registration of these DBMSs to them using corba. This registration to a corba based multidatabase system offers an advanced way in achieving *** first introduce Panorama multidatabase system and discuss the basic implementation decisions in registering different DBMSs using the corba compliant ORB, namely VisiBroker to this system. Then, it aims to discuss the method we've used in registering different DBMSs to our designed multidatabase system Panorama. A detailed discussion about the registration of Oracle8 and Sybase is given. And finally, a conclusion and the future work for this system have been given.

关键词： heterogeneity corba interoperability multidatabase system

Object Replication and corba Fault Tolerant Object Service

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Wuhan University Journal of Natural Sciences 2001年第Z1期6卷 268-277页

作者： Yeh Yao ming 1,Sun Wen Da 2,Chen Yeong Sheng 2 1. Department of Information and Computer Engineering, Taiwan Normal University, Taipei,China 2. Department of Information Management,Hwa Hsia College of Technology and Commerce, Taipei,China Department of Information and Computer Engineering Taiwan Normal University Taipei China Department of Information Management Hwa-Hsia College of Technology and Commerce Taipei China

corba (Common Object Request Broker Architecture) provides 16 Common Object Services for distributed application development, but none of them are fault tolerance related services. In this paper, we propose a replicated object based Fault Tolerant Object Service (FTOS) for corba environment. Two fault tolerant mechanisms are provided in FTOS including dynamic voting mechanism and object replication mechanism. The dynamic voting mechanism uses majority voting strategy to ensure object state consistency in failure situations. The object replication mechanism can help system administrators to replicate and start up objects easily. Our implementation provides a library according to the style of COSS. With this library, programmers can develop distributed applications with fault tolerance capability very easily.

关键词： corba replicated object dynamic voting object replication

Application Research and Implementation of the corba-Based Web Distributed Network Management System

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Wuhan University Journal of Natural Sciences 2004年第5期9卷 699-705页

作者： WANGFeng SHIBing-xin DepartmentofElectronicsandInformationEngineering.HuazhongUniversityofS cienceandTechnology.Wuhan430071.HubeiChina

The distributed management has become an important tendency of development for the NMS (Network Management System) with the development of Internet. Based on the analysis of corba (Conmon Object Request Broker Architecture) technique, we mainly discuss about the applicability of the approach by which corba combined with Java has been applied to the system model and Web architecture: and address the applied frame and the interface definitions that are the, key technologies for implementing the Distributed Object Computing (DOC). In addition, we also conduct the research on its advantages and disadvantages and further expected improvements. Key words distributed Web network management - corba - Java CLC number TP 393.07 Foundation item: Supported by the QTNG (Integrated Network Management System) Project Foundation and QT-NMS (SDH NMS) Project Foundation of Wuhan Qingtian Information Industry Co., LTD of Hubei of China (SDH.001)Biography: WANG Feng (1979-), male Master candidate, research direction: administration of network and software engineering.

关键词： distributed Web network management corba Java

The Interoperability of Distributed DBMSs in a corba-Based Multidatabase System

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Wuhan University Journal of Natural Sciences 2002年第4期7卷 408-414页

作者： Sarem Mudar Li Rui-xuan Xiao Wei-jun Lu Zheng-ding Chen Chuan-bo Huazhong University of Science and Technology

One way of achieving interoperability among heterogeneous, distributed DBMSs is through a multidatabase system. Recently, there is an increasing use of corba implementation in developing multidatabase systems. Panorama is a multidatabase system that has been implemented on the top of corba compliant namely VisiBroker. It aims to achieve interoperability among Oracle, Sybase and other different DBMSs through the registration of these DBMSs to Panorama and through the single global query language PanoSQL designed for this system. In this paper, we first introduce corba for the interoperability in multidatabase systems. Then, a general view for our designed multidatabase system, Panorama, has been given. In section four, we introduce the global query language PanoSQL designed to achieve interoperability among the different DBMSs implemented in Panorama. Then, as an example, we present the registration of Oracle to Panorama in order to achieve interoperability in this system. And finally, a conclusion and the future work for this system have been given.

关键词： interoperability heterogeneity corba global query language multidatabase systems

A Multi-agent Architecture in corba Environment for Distributed Measurement System

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High Technology Letters 2001年第3期7卷 55-59页

作者：罗小川 Harbin Institute of Technology Harbin 150001 China

The MACE - a Multi agent based distributed measurement architecture in corba environment used to develop intelligent distributed measurement system for remote control and monitoring of instruments over network such as Internet and Ethernet was proposed. The architecture is characterized by interoperability, collaboration and intelligence by means of corba and multi agent technologies. The architecture and exemplifies it by a common project was described.

关键词： Distributed measurement system corba Multi agent system Software agent Distributed computing

corba分布计算平台基于反应式Agent模型的流控机制研究

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计算机研究与发展 2001年第7期38卷 826-832页

作者：项君周立吴泉源王怀民国防科学技术大学计算机学院长沙410073

基于反应式 Agent模型和 corba标准中 POA处理状态语义的定义 ,提出了一种基于层次管理域的可配置多端口 ORB结构 ,支持用户按照管理域部署和管理分布应用 ,并基于该结构讨论了 corba分布计算平台的流控实现技术 .基于 Reactor模板的扩... 详细信息

基于反应式 Agent模型和 corba标准中 POA处理状态语义的定义 ,提出了一种基于层次管理域的可配置多端口 ORB结构 ,支持用户按照管理域部署和管理分布应用 ,并基于该结构讨论了 corba分布计算平台的流控实现技术 .基于 Reactor模板的扩展技术 ,给出了一种基于事件类型“借用”策略 ,公平、自调度的流控机制和算法。

关键词： corba 流控机制分布计算平台反应式Agent模型

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corba中对象事务服务研究与实现

电子科技大学学报 2001年第6期30卷 590-595页

作者：杨涛郑晓霞刘锦德电子科技大学计算机科学与工程学院成都610054

介绍了事务概念及其原子性、一致性、隔离性、持久性,阐述了保证事务ACID属性的两阶段提交算法;对corba中对象事务服务框架进行了研究,通过对规范中各个对象及其接口的分析,论述了OTS面向对象的分布式事务处理机制;最后给出了服务中事... 详细信息

介绍了事务概念及其原子性、一致性、隔离性、持久性,阐述了保证事务ACID属性的两阶段提交算法;对corba中对象事务服务框架进行了研究,通过对规范中各个对象及其接口的分析,论述了OTS面向对象的分布式事务处理机制;最后给出了服务中事务工厂、控制器、协调者、资源等对象基于可移植对象适配器的实现。

关键词：计算机网络对象事务服务 corba 分布式计算

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分布式网络管理研究:基于corba的方法

清华大学学报（自然科学版） 2004年第1期44卷 138-141页

作者：杨家海吴建平朱虹清华大学信息网络工程研究中心北京100084 优创科技有限公司深圳518057

传统的基于corba/SNMP网关模式的分布式网络管理存在效率低下和对象不匹配等问题。该文提出了一个新的基于corba的分布式网络管理体系结构DiNM/corba,采用Java和JMAPI技术将corba计算环境和SNMP网络管理环境无缝地集成起来,使corba环境... 详细信息

传统的基于corba/SNMP网关模式的分布式网络管理存在效率低下和对象不匹配等问题。该文提出了一个新的基于corba的分布式网络管理体系结构DiNM/corba,采用Java和JMAPI技术将corba计算环境和SNMP网络管理环境无缝地集成起来,使corba环境的服务对象可以直接访问SNMP代理的信息。文中论述了系统的组成结构,着重讨论了DiNM/corba系统基本服务——数据采集和事件管理的设计和实现。和传统的纯SNMP环境相比,基于corba和JMAPI集成方式比基于corba/SNMP网关模式的管理操作效率提高近20%。

关键词：分布式网络管理计算机网络公共对象请求代理结构 corba 事件服务简单网络管理协议 SNMP

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corba应用的连接管理技术研究

小型微型计算机系统 2001年第1期22卷 93-95页

作者：李影周兴社黄罡西北工业大学计算机科学与工程系网络计算技术研究所西安710072

资源管理对于构造大型应用系统非常重要 ,其中连接管理是确保系统有效运行和负载均衡的关键 .本文讨论了 corba应用系统中的连接资源的管理问题 ,分析和研究了不同的连接管理策略 ,对在应用级利用集线器实现连接资源管理进行了描述 .

关键词： corba 集线器网络地址资源管理负载均衡计算机网络