查询词典 distributed database

Querying in distributed database system is more complicated than in centralized database system.

是分布式数据库系统的主要问题之一。

Federated database is a kind of distributed database.

而联邦数据库是分布式数据库领域的一个分支，它弥补了传统分布式数据库的不足。

Moreover, A hybrid algorithm, ALHybrid, which is made of the algorithm LIDBSO and the algorithm AprioriIpv, is designed. Two algorithm, MQC_Apriori and MQC_LIDBSO, are given to mining multiple level quantitative association rules with item constrains. Two algorithm, PMARⅡ and PMARⅢ, which are based on different sequential mining algorithms, are given for parallelling mining association rules. In order to solve the mining association rules problem when we add a set of data to a database or delete a set of data from a database, two incremental updating algorithm, EUAR and EUAR, are given. Three incremental updating algorithm for association rules mining, DIUAⅠ, DIUAⅡ and DIUAⅢ, are dedigned to solve the three kinds of association rules incremental updating problem in distributed databases.

另外，文中还设计了一个算法LIDBSO与算法AprioriIpv相结合的混合采掘算法ALHybrid；对于多层次、带约束、多值属性关联规则的采掘问题，给出了两个采掘算法：算法MQC_Apriori和算法MQC_LIDBSO；在关联规则的并行采掘方面，还设计了两个基于不同顺序关联规则采掘算法的并行算法：算法PMARⅡ和算法PMARⅢ；在关联规则的增量式更新问题上，还给出了两个改进算法：算法EUAR和算法EUARˉ，分别用于解决当数据库增加或删除一个数据集合时的关联规则增量式更新问题；针对分布式数据库中的关联规则增量式更新的三类问题，提出了三个增量式更新算法：算法DIUA Ⅰ、算法DIUAⅡ和算法DIUAⅢ。

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。

Compared with the first generation database designed in Access by National Conge nital Heart Surgery Database Committee, our database is more complex with full p otential, which can totally meet the needs of clinicians and researchers in the study of congenital heart defects and can provide remote information data sharin g digital platform.

该数据库系统与美国心胸外科协会应用Access系统开发的第一代数据库比较，功能更加完善，能够充分满足临床管理、医学统计、科研应用等要求，并可为远程信息共享互换提供数字化平台。

The technique of Delphi database steered the in-depth study and the appliance, and the library of cardinal consummation paraquinones managed the system's demand analysis, function shuttering cake the curtate, database the modal analysis, amalgamation to have this design the database structured the sumed the appliance of procedured.

本文结合中小型图书馆管理系统，对数据库管理系统、SQL语言原理、Delphi应用程序设计，Delphi数据库技术进行了较深入的学习和应用，主要完成对图书馆管理系统的需求分析、功能模块划分、数据库模式分析，并根据具体要求设计了数据库结构和应用程序。

He has extensive experience in all facets of database systems development, including developing and teaching database and data modeling classes, systems analysis and design, database and system administration, and data analysis.

他在数据库系统发展的所有方面中有广泛的经验，包括发展与教学数据库和数据靠模切班级、系统分析和设计、数据库和系统行政、数据分析等等。

Database Master is a powerful database development, management and administration software for the MySQL, PostgreSQL and SQLite database systems.

数据库大师是一个功能强大的数据库开发，管理和管理软件的MySQL，PostgreSQL和SQLite数据库系统。

Backend database using Microsoft SQL Server 2000, encapsulates the database operation, easy to operation function call database.

后台数据库采用了Microsoft SQL Server 2000，封装了数据库操作类，以方便调用数据库操作函数。

Molecular Distillation is a kind of high vacuum distillation method, which is suitable for the separation of high boiling, heat sensitivity and viscidity products.

分子蒸馏技术是一种在高真空条件下进行的连续蒸馏过程，适合于分离高沸点、热敏性及具有生物活性的混合物。

They are to the Noughties what yuppies were to the Eighties .

那在六十年代是时髦的，但在八十年代肯定是过时了