relational model of database
英 [rɪˈleɪʃənl ˈmɒdl ɒv ˈdeɪtəbeɪs]
美 [rɪˈleɪʃənl ˈmɑːdl əv ˈdeɪtəbeɪs]
网络 关系式数据库模型; 关系数据库模型
双语例句
- It's important to point out when a layer of abstraction or something else like an EDM is used to transform the relational schema of a database, there is going to be a performance decrease.
需要重点指出的是，当一个抽象层或者类似EDM（译注：指EntityDataModel）的模块被用来转换数据库的关系样式时，会带来一定的性能损失。 - Research on Constraint Relational Model of Non-Classical Relational Database in Query Optimization
非经典关系数据库中约束关系模型在查询优化中的应用 - A data object access model combining the object-oriented programming technique with the access process of traditional relational database management system ( RDBMS) was put forward.
结合传统的关系数据库管理系统（relationaldatabasemanagementsystem，RDBMS）访问过程，采用面向对象的编程技术提出了一种数据对象访问模型。 - The concept of relational database and the design theory of relational model were introduced and the application of relational model to a pest database of afforestation was expounded in terms of relational data framework, relational operation and relational standards.
介绍了关系数据库概念和关系模型的设计理论，阐述了关系模型中关系数据结构、关系操作、关系规范等在绿化植物有害生物数据库中的具体应用。 - This paper puts forward a Generalized Fuzzy Relational Data Model Based on Vague Set ( VGFRDM) of fuzzy relational database, which is built on the existing fuzzy relational data model.
该文在已有的模糊关系数据模型的基础上，提出了模糊关系数据库的一种基于Vague集的广义模糊关系数据模型VGFRDM。 - This paper introduces the modeling method of object-oriented data model, and the transform method and application from object-oriented data model to relational data model, which combines with the development of the database of Vibro_Energy Mill CAD System.
本文结合立磨机CAD系统的数据库的开发，介绍了面向对象数据模型的建模方法，及将面向对象数据模型映射到关系数据模型的方法和应用。 - Has built an real time relational data model ( RTRDM) in real time database systems in paper of relational data model in real time database systems.
在《实时数据库系统的关系数据模型》一文中建立了实时数据库系统（RTDBS）的实时关系数据模型（RTRDM）。 - In order to deal with this problem, the Object Relational Mapping approach is proposed to unify the objective model and relational model, providing a way of data interchange between objects and relational database.
为解决这一问题而提出的对象关系映射（ObjectRelationalMapping，简称ORM），实现了面向对象模型与关系模型之间的相互映射，提供了对象与关系数据库沟通的桥梁。 - In this paper, the original extended relational model has been improved by adopting MFM in the research of incomplete information database.
本文将三值逻辑谓词演算系统MF~M应用在不完全信息数据库的研究中，对原有的扩充关系模型做了改进。 - Conversion from Object Model to Relational Model of Database
从对象模型到数据库关系模型的转换 - This paper discusses the optimization of large scale relational database application system based on three-tier client/ server model with the example of the database Sybase.
文章以大型关系数据库SYBASE的应用系统设计为例，探讨了基于三层Clien／Server（以下简称C／S）模型的大型关系数据库应用系统优化设计技术。 - Through research of transform from XML DTD model to relational model, the failure data of XML format was stored in relational database;
通过对XMLDTD模式向关系数据库模式转换的研究，解决了故障数据XML文件向关系数据库的存储； - The urban fundamental geographic spatiotemporal database is designed by using the relational spatiotemporal data model, and the design includes logical design and physical design of the spatiotemporal database.
分析了目前主要的几种时空数据模型及其各自特点，采用关系型时空数据模型，设计出城市基础地理时空数据库，包括时空数据库的逻辑设计与物理设计。 - Secondly, in order to realizing the processing of uncertainty information, the thesis bases on the probabilistic relational model of the non-classical theory of relational database, doing some research on the application in electric power and algorithms of probabilistic sign of probabilistic relational model.
其次，为了实现不确定信息的处理，以非经典关系数据库中概率关系模型为基础，对其在电力方面的应用及其电力数据库中的概率计算进行了研究。 - So the relational data model has been mapped into object-oriented domain model, Object-Relational Mapping is adopted to complete the entity domain objects persistence and encapsulate the detail of accessing database.
系统采用对象-关系映射实现实体对象的持久化，封装数据库访问细节，将关系模型映射为面向对象的域模型。 - So it is better to apply to the non-classical theory of relational database. This thesis focuses on the investigation and application of the probabilistic relational model in the non-classical theory of relational database.
本论文主要是对此类关系数据库模型中的概率关系模型进行的研究与应用。 - Relational database model was introduced by E.F.Codd in a series of his papers in 1970. Relational database theory are becoming more and more mature.
关系数据模型是由E.F.Codd于1970年开始发表系列论文提出的，关系数据库理论的研究逐渐趋于成熟。 - Firstly, it explains the influence of the probabilistic relational model on the operation of database, it also indicates the semantic and algorithm of the probabilistic relational model.
首先，阐述了概率关系模型对数据库操作的影响，并给出了概率关系模型的语义和运算方法。