计算机系统和网络的安全是分布式数据库系统安全的基础。
Computer system and network security are basis of security of distributed database system.
保持数据的一致性是应用分布式数据库系统的一个根本要求。
Maintaining the consistency in distributed database system is a basic requirement.
分布式数据库系统可以看作是一系列集中式数据库系统的联合。
Distributed database system may be regarded as a series of union of centralized database system.
分布式数据库系统的开发和网络互联的实现是两个最重要的部分。
Therefore, the development of distributed database system and the interconnection of network are t...
在分布式数据库系统中，由于数据的分布和冗余，查询处理变得更为复杂。
For the distributed database systems, query processing becomes more difficult because of distribution and redundance of data.
安全分布式数据库系统中，常会出现信息不一致现象，由此产生推理通道。
In a secure distributed database system, information inconsistency often exists, thus gives rise to inference channel.
分布式数据库系统虽然基于集中式数据库系统，但却有一定的特色和理论基础。
The distributed database system has its own characters and theory, though it was based on the centralized database system.
在分布式数据库系统中，数据库复制对于系统的可靠性及效率起着非常关键的作用。
In distributed database systems, database systems for the reproduction of the reliability and efficiency play a very crucial role.
变电运行系统基于分布式数据库系统设计，采用了面向班组、面向基础数据的设计思想。
The subsystem is based on distribution database structure design. A new database system design method, named as basic working units and data-oriented, is utilized.
提出了一种基于对象服务的分布式数据库系统的设计方案，介绍了其工作原理和设计思想。
This paper brings forward a design scheme of distributed database system based on object service and presents its working principle and design thought.
在大规模的分布式数据库系统中，数据库复制对于系统的可靠性及效率起着非常关键的作用。
In the extensive distributed data base system, the data base duplication plays a very key role to the dependability and efficiency of the system.
作为各种信息系统的基础和核心，分布式数据库系统的可靠性和性能成为人们日渐关注的焦点。
As the base and core of the information systems, the distributed database's reliability and performance has been gradually the focus of people's attention.
由于分布式数据库系统并不是网络技术与集中式数据库的简单结合，需要在合适的系统架构上实现。
As distributed database system is not a simple combination of network technology and centralized database, it needs to achieve in a suitable system framework.
本文将详细介绍分布式事务、并发控制和资源请求模型，总结出分布式数据库系统的通用死锁条件。
In this paper, distirbuted transaction, concurrency control and resource request model are introduced in detail. The universal deadlock condition in distirbuted database system is summarized.
经过对数据库系统的分析，采用关系数据库作为用户管理的数据库类型，进行分布式数据库系统的构建。
After analysis of database system, relative database was chosen as database type to build the distributed database system.
分布式对象构造技术是实现分布式数据库系统的基础，而数据库访问技术是开发分布式数据库系统的关键。
Distributed object construction technique is the foundation to achieve distributed database system function, and the technique of accessing database is the key to achieve distributed database system.
在广域网中，片段分配是分布式数据库设计中的一个主要问题，因为它关系到整个分布式数据库系统的性能。
On a wide area network, fragment allocation is a major issue in distributed database design since it concerns the overall performance of the distributed database system.
本文较全面地总结了分布式数据库系统的查询处理，并提出用HASHING 方法减少半连接通讯的开销是有利的。
The query processing in the distributed database systems is comprehensively summarized. This paper shows that using HASHING method for thereduction of semi-join communication cost is beneficial.
并以正在研发的数字矿井项目中的安全信息管理模块为例，介绍了基于CORBA的异构分布式数据库系统的实现方法。
Then the security information management model in the SKJ2004 project is taken as an example to describe the implementation process of heterogeneous distributed database systems based on CORBA.
随着互联网和分布式数据库系统的广泛应用，如何保证多个数据库之间的数据一致已成为系统可靠运行所要解决的重要问题。
With the wide application of the internet and the distributed database system, it has become more important to guarantee data consistency of multi-database for system to run reliably.
分布式数据库系统的研究涉及分布式处理技术、网络技术和数据库技术的研究，而这些研究必须贯穿在对一些现实问题的解决之中。
The study of distributed involves the study of distributed processing technology, net work technology and database study, which must be related to solution on some real existent problems.
由于分布式数据库系统不能满足PK I安全体系结构的要求，我们采用目录服务技术来为其实现证书、证书作废列表的存储管理。
Because the DBS cannot meet the requirement of PKI, we use the Directory Service technology to implement the administration of Certificate and Certificate Revocation List for PKI system.
本文在本实验室所开发的新一代分布式数据库系统——数字有机体数据库系统的基础上，设计并开发了一种针对数据库的搜索引擎。
This paper has designed a database search engine based on Digital Organism database System, which is a new generation of distributed database developed by our research office.
目录服务作为一种日益引起业内重视的新型数据存储技术，它的数据存储方式、分布式的构造方式以及数据访问方式与分布式数据库系统有很大区别。
Directory Service is a data-storage technology, which is completely different with DBS, especially in the mode of data-storage, the structure of distributing and the mode of visiting data.
在分布式数据库系统中，由于数据的物理分布使得分布式查询处理增加了许多新的复杂性，不同的查询处理策略，其查询处理代价和复杂度是大不一样的。
When adding distributed data into the database system, distributed query process is more difficult and complicated. The cost of query process is different due to different query process tactics.
在分布式数据库系统中，由于数据的物理分布使得分布式查询处理增加了许多新的复杂性，不同的查询处理策略，其查询处理代价和复杂度是大不一样的。
When adding distributed data into the database system, distributed query process is more difficult and complicated. The cost of query process is different due to different query process tactics.
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