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- This logical data model is called a data source view. 此逻辑数据模型称为数据源视图。
- The general design objectives of the logical data model are correctness, consistency, non-redundancy and simplicity. 逻辑数据模型的一般设计目标是正确性、一致性、非冗余和简单性。
- The next two levels of model abstraction, the logical data model and the physical data model (often referred to interchangeably) provide the details required by software developers to implement the objectives for the conceptual model. 在抽象概念中的另外两层,逻辑层和实体层(常被提到是可以互换的)则提供了软体开发者去实现概念层的目标中所需要的细节。
- Developing a Logical Data Model 一、开发逻辑数据模型
- The logical data model is an 逻辑数据模型是数据的
- logical data model 逻辑数据模型
- Class is based on the XPath data model. 类基于XPath数据模型。
- A data model is a plan for building a database. 一个资料模型就是对建立一个资料库的规划。
- And this data model is described in XML DTD. 本文用统一建模语言描述了整个数据模型,给出了数据模型中几种重要类的文档类型定义。
- Its data model is the basis of DW of an ISC. 三是集成供应链节点企业数据库,并形成为集成供应链信息平台数据仓库提供基础数据的企业数据模型。
- Creates a new property for the built-in data model. 为内部数据模型创建一个新的属性.
- What is a logical data mapping and what does it mean to the ETL team? 什么是逻辑数据映射?它对ETL项目组的作用是什么?
- From the point of database design, this paper treats DTD as the logical model of XML document and presents a method which converts object-oriented data model to DTD. 本文由数据库设计角度出发,将XML文档类型定义(DTD)看作逻辑模型,提出了一种由对象概念模型到DTD的转换方法。
- I'll also show how we can cleanly integrate business rules and custom validation logic with our data model. 我还会展示一下如何将我们的业务规则和自定义的验证与我们的数据模型进行集成。
- Goth techniques have the same objective: converting a programmer's logical data requests to physical form. 这两种技术有同样的目的,都是把程序员的逻辑数据请求转换成物理形式。
- The Order could be the root of another hierarchy in the data model. 订单可能是数据模型中的其他层次的根。
- Increasingly, the programmer's logical data request is translated to physical form by a database management system. 用数据库管理系统把程序员的逻辑数据请求转换成物理形式是越来越广泛采用的一种方法。
- The Catabase data model structure is shown in Figure 4. 如图4所示是该Catabase数据模型的结构。
- This SQL script will create the data model used in our example. 这个SQL脚本可以创建我们示例中使用的数据模型。
- Configuration files contain elements, which are logical data structures that set configuration information. 配置文件包含元素,它们是用来设置配置信息的逻辑数据结构。