In addition, like CWM, ODM provides an entity relationship that could be used to model business functions decomposition, business information needs, and organization, decomposition. 另外,类似于CWM,ODM提供了可以在业务功能模型分解,业务信息需求以及组织分解中使用的实体关系。
The Rules of Converting DB Entity Relationship Model to the Relation Schemes ER模型转换为关系模式的实用规则
A design of a tool, which is called object-oriented semantic entity relationship model, of obtaining information of user ′ s requirements will be given in this paper, and also the related techniques realizing it; 本文提出并设计实现获取用户需求信息的工具&面向对象语义实体联系模型,同时研究此模型实现的有关技术;
In this paper, we analyze the shortcomings of hierarchical structure, and build product model with extended entity relationship ( EER) approach. A product model of fuel pump is shown as an example. 该文分析了递阶结构表达方式的不足,利用扩展的实体关联(EER)表达方式建立了产品的数据模型,并以油泵产品为例建立了产品数据模型的展开结构。
In this paper, we give a temporal ER-method-based data model, that is the Temporal Entity Relationship model ( TER). 本文给出了一个基于E-R方法的时态数据模型,即时态实体-关系(TER)模型。
An Object-oriented Implementation of an Entity Relationship Model 实体关系模型的面向对象实现
The final ERD ( entity relationship model diagram) and system datum dictionary are given through data sheets normalization during logic design and physical design. 在逻辑设计与物理设计过程中通过数据规范化后得出最终的ER模型图并给出系统数据字典。
The algorithm of generating assembly dimension chain automatically based on entity relationship model and a new algorithm in 1D based on searching direction which can generate mating relation graph are proposed. 本文在实体关系模型的基础上研究了装配尺寸链的自动生成算法,在一维尺寸链生成算法中提出基于搜索方向的配合关系图生成的新算法。
Studies on temporal entity relationship data model 时态实体-关系数据模型TER的研究
Design of hierarchical data model from entity-relationship model 从实体联系模型变换为层次模型的方法
Every aggregation type corresponds to a data structure diagram and an entity relationship model. 每种聚合类型对应一种数据结构图和ER模型。
In some ways, These rules conquers the problems of converting Entity Relationship model ( ER model) to the relation scheme. 提出的转换规则在一定程度上解决了因转换规则不足而导致ER模型无法与关系模式紧密衔接的问题。
The description of entity relationship in O O model O-O数据模型中实体联系的表达方法
TER model not only has the properties of the Entity-Relationship model, but also possesses those of the object-oriented model, with a powerful ability for expression. TER模型不仅具有实体-关系模型的优点,而且还具备面向对象模型所具有的很多性质,表达能力强。
In this paper, an indirect method is presented, which forms an object-oriented data model by entity/ relationship data model. 文章提出了一种从实体/联系模型转换为面向对象模型的间接方法。
There are more than two kinds of entity types and relationship in heterogeneous information network. Multilayer nested cube can be used to model heterogeneous information network realizing the OLAP operations on heterogeneous information network. 异构信息网络中具有两种及以上的实体类型和多种关系类型,本文提出的多层嵌套立方体可以为异构信息网络建模,实现异构信息网络上的多维分析操作。
Firstly, this thesis introduces the research present situation and the development tendency of highway and its electronic toll collection system, designs the electronic toll collection system from several aspects of system architecture, data flow, entity relationship model and so on. 首先介绍了高速公路及其收费系统的发展现状以及发展趋势,并从系统架构、数据流程、实体关系模型等方面对提出的电子收费系统进行设计。
In the outline design stage, analysis of needs identified by the system boundary of the entities and relationships between the various entities to identify, build system entity relationship model. 在概要设计阶段,对需求分析后所确定的系统边界中的实体和各实体间的关系进行识别,构建系统实体关系模型。
At present the traditional modeling technology of relational database is entity relationship model ( ER model). 目前关系数据库的传统建模方法是使用实体关系模型(ER模型)。