We describe a hybrid concurrency control policy using dynamic timestamp allocation method for distributed database systems.
本文描述了一个分布数据库系统的混合并发控制策略，这个策略使用了动态时间标签分配方法。
For the distributed database systems, query processing becomes more difficult because of distribution and redundance of data.
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。
In distributed database systems, database systems for the reproduction of the reliability and efficiency play a very crucial role.
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。
To make this happen, the 2-phase-commit protocol was invented (see Principles of Distributed Database systems in Resources) and is also implemented in various systems.
为确保这一点，两步提交协议(请参阅参考资料中的分布式数据库原理)被提出且在各种系统中实现。
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.
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。
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.
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。
A web site visitor opens a new account, which must then be created in two different distributed legacy systems: an ERP database for accounting, and a CRM database for customer support.
Web站点的访问者开了一个新的帐户，在此之后必须在两个不同的分布式旧系统中创建：用于帐户管理的ERP数据库和用于客户支持的CRM数据库。
Dan has over 20 years of experience in research and commercial distributed computing ranging over transaction and object-oriented systems, programming languages, messaging, and database systems.
Dan在商业分布式计算技术的研究方面有20多年的经验，涉及的领域包括面向事务和对象的系统、编程语言、消息传递和数据库系统。
Makes licenses more transferable across distributed systems since PVUs can be moved around to different database servers that run on different core architectures.
因为pvu数适用于采用不同处理器核体系结构的不同数据服务器，可以更方便地跨分布式系统转移许可证。
In this paper, we describe an algorithm, for query processing with semantic optimization in distributed relational database systems.
本文描述一个分布式关系数据库系统中具有语义优化的查询处理算法。
Since distributed spatial database will be the main data source of Internet GIS, we have to cope with the intercommunication between heterogeneous databases and systems.
随着空间数据获取能力的飞速发展，分布式存储管理的空间数据库将成为网络GIS的主要数据源。
Recovery from node failures is a critical issue in distributed and parallel database systems.
分布式并行执行子系统负责具体的数据库操作。
A special case of information systems where the database consists of observations on spatially distributed features, activities, or events, which are definable in space as points, lines, or areas.
一个空间信息系统的例子，数据库由对空间分布特征、活动性、事件进行观察所组成，在空间可定义点、线、面。
Multiversion optimistic concurrency control (MVOCC) protocol and mobile transaction real-time commit (MTRTC) protocol are presented for mobile distributed real-time database systems (MDRTDBSs).
提出了移动事务实时提交协议(MTRTC)和多版本乐观并发控制协议(MVOCC)处理移动分布式实时事务。
The system is distributed, cross-platform and supports multi-database, in the meantime it can integrate with other systems, so it can support process automation and management.
系统实现了分布式异构、跨平台，支持多数据库，同时充分考虑到了与其他系统的集成，可较好地支持过程自动化及其管理。
The results of performance comparison and evaluation show that 1PRACP can improve the performances of mobile distributed real-time database systems.
对1PRACP进行了性能比较和评测，显示了它在各方面的优越性。
The results of performance comparison and evaluation show that 1PRACP can improve the performances of mobile distributed real-time database systems.
对1PRACP进行了性能比较和评测，显示了它在各方面的优越性。
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