分布式数据库

Model is the relative data which is the internal property of Object;View is external presentation form of Model, one Model can correspond to one or more View, View also possesses the function of alternating with environment;Controller is the relating ligament of Model and View, Controller picks up the external information transmitting from View and transfers to corresponding event and the update the Model.

其中MVC 设计模式分离了数据和控制，增强了框架的模块性；采用了分布式组件技术，提高了软件重用性；采用了多层的思想，把表示层、商业逻辑层和数据库层分立开来，便得系统的移植性和重用性得到了加强。

In another distributed network, the accounting, sales, production, and engineering departments of a busy-ness firm might have their own computers, with althea machines linked to a centralized mainframe housing the organizations database.

在另一个分布式网络中，会计，销售，产品和程技术部门都可以拥有自己的计算机。所有这些计算机和一台中央机相联，该主机的机房内还有数据库。

In a distributed real time database system, the only way to ensure transaction atomicity is to investigate and develop a real time atomic commit protocol.

在分布式实时数据库系统中，保证事务原子性的唯一途径是研究和开发出一个实时的原子提交协议。

Combined with "The research and development of automobilism simulator based on distributed virtual reality technology" and other projects, it structured a three-dimensional model database by applying the three-dimensional modeling software MultiGen Creator.

本论文以"基于分布式虚拟现实技术的汽车驾驶模拟器的研究与开发"等相关课题为背景，应用了三维建模软件MultiGen Creator建造三维模型数据库。

In this paper, COBOL language environment in distributed computer network is described in detail.

分布式计算机网络与数据库的结合，将对信息管理产生深远的影响。

Data applications are set up resources for interoperable model of heterogeneous database environment or file system connected to achieve implementation of the middleware connectivity; at Distributed System, the essential data are concentrated in the data storage server, they can be a relationship between the type, compound document type, with a variety of multimedia-based storage format, or are encrypted or compressed storage, such middleware for virtual buffer at the network access, format conversion, extracting and other convenient

是为了建立数据应用资源互操作的模式，对异构环境下的数据库实现联接或文件系统实现联接的中间件；在分布式系统中，重要的数据都集中存放在数据服务器中，它们可以是关系型的、复合文档型、具有各种存放格式的多媒体型，或者是经过加密或压缩存放的，这类中间件将为在网络上虚拟缓冲存取、格式转换、解压等带来方便

But if this is not the case, then your only way is to abandon the relational database for a distributed one.

但如果是这样的情况并非如此，那么你唯一的办法就是放弃关系型数据库的一种分布式1 。

This paper focuses on the research of building the graph and image database in the distributed architecture.

本文主要研究将图形图像数据库构建于分布式系统结构中。

The proper hydrology model on the gird cell plays an vital role in the Distributed Hydrology Model, In this paper, It is divided two parts in vertical section, they are up-ground and under-ground relating to rainfall, air temperature, evaporation and ooze hydrological model, At the same time, I integrate all indispensable data and found two databases which are geographical information database and hydrological information database, write program using computer language—VB to simulate process of isochrones of the watershed.

创建分布式水文模型的关建是建立一个合适的基于栅格单元的水文模型，本文将栅格单元在垂直方向上分为二层，即地表层和地下层，涉及到降雨、温度、植被截留、蒸散发、下渗等水文计算模型；并综合各类相关数据，建立了地信数据库和水文数据库，通过VB编程进行等时流线模拟计算。

In the section of database designing, the problem of keeping the integrity and consistent of the data has been raised, and the paper puts forward the solution by using replication and distributed transaction management. Moreover, the software that is mainly designed for the operation of database and would be used by the telephonists has been implemented.

在数据库设计部分着重讨论了保持数据的完整性和一致性的问题，并且提出了采用复制技术和分布式事务处理方法的解决方案；此外还开发了座席端的应用软件，主要用于进行对数据库的操作。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。