All problems mentioned above were derived from practical project . for industry and research use , the conclusion and suggestion in the paper will benefit working engineers in the distributed database system design and network application areas 本文的分析和设计均来自于系统研究及工作实践，提出的建议对分布式数据库系统的研究和发展具有积极的指导作用。
This method can basically realize the distributed transaction execution without any block . besides the correct realization of the distributed database restoration , this method guarantees the high usability of the distributed database system 该方法基本能实现分布式事务执行的无阻塞，在正确的实现分布式数据库恢复的前提下，保证了分布式数据库系统的高可用性。
Our goal is to construct a general dw engine in which the existing mis system and distributed database system can embed , and to improve it as a dw system which can be used to develop high level data application at the lowest cost 我们的目标是致力于构建一个通用的可嵌入现有mis系统和分布式数据库系统的数据仓库引擎，以最小代价将它们提升为数据仓库系统，进而进行高层的数据应用开发。
Surely , this structure design has some parts to be improved , such as the distribute database mangament modular needs specification in detail , and the fault - torlerance modular needs perfections . all those are the work to be done later 该设计结构还有一些地方有待完善，如分布式数据库系统管理功能模块的实现和细化，空管系统消息管理模块，以及系统容错处理功能模块的完善，这些都是下一步工作的目标。
In distributed database system , it is not the centralized control of system but the site autonomy is emphasized . and the system should keep the data distributed , and then , the instance of data " s distributing can be ignored when program the application 在分布式数据库系统中强调结点的自治性而不强调系统的集中控制，且系统应保持数据的分布透明性，从而使应用程序编写时可完全不考虑数据的分布情况。
In the essay , discussions are focused on the transparency of database linkage and location , error management in remote control , treatment of suspending matters , referential integrity constraint , database access security and inquiry optimization 文中，对oracle分布式数据库系统设计与实现中的数据库链接与位置透明性、远程过程中错误的管理、悬而未决事务的处理、参照完整性约束、数据库访问的安全性以及查询优化几个部分重点进行了探索。
The paper defines the concept of distributed database , the characteristics and structure of the distributed database system , the design rule and step of the distributed database , etc . also the paper describes the materialization of distributed database on the configuration of logistics system 本文系统的介绍了分布式数据库的相关概念，分布式数据库系统的特点和结构以及分布式数据库的设计准则和步骤等等。讲述了分布式数据库在物流系统的体系结构中的体现。
The distributed system generally consists of several parts as follows : the user interface sub - system , the catalog management sub - system , the compiling sub - system , the distributed transaction management and cocurrent control sub - system , the data execution sub - system , the communication sub - system , the restoration system and the database 分布式数据库系统通常包括以下几个部分：用户接口子系统、目录结构管理子系统、编译子系统、分布式事务管理和并发控制子系统、数据执行子系统、通讯子系统、恢复子系统和数据库。
The concept on active network ( darpa , 1994 ) , which rises a popular discussion now , provides a new approach on dealing with the bottleneck on ddes design as well as a environment on network , running system by inserting customized program . thus , introducing the advance in active network and discussing how to improve the performance of ddbs with an technologies become the key point of this paper 最后介绍了基于主动网络相关技术在应用层设计一个自适应的主动适配层，依靠面向应用层的主动网技术实现来研究分布式数据库系统目前无法解决的网络异构课题；通过基于主动网络技术的大规模可靠组播协议( larmp )的设计，解决在internet上设计大规模可靠组播协议的难题。
Distributed database is the production that was combined by the computer network and the database technology . it is a new field of database technology . distributed database system has new way to manage the numbers and save them in which the normal database and the c / s ( client / server ) has not 分布式数据库是数据库技术和计算机网络技术相结合的产物，是数据库技术的一个新领域，分布式数据库系统( ddbs )具有集中式数据库和c s (客户机服务器)不具备的数据的存储和处理方式。
