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- A conceptual data model simplifies the design process because it hides a lot of details. 概念数据模型可以简化设计过程,因为它将大量细节隐藏起来。
- All you need to do is to generate the physical data model that corresponds to your conceptual data model. 唯一还需要做的事情就是生成与概念数据模型相对应的物理数据模型。
- In a conceptual data model, you can usually denote all of this structure with a single connection. 在概念数据模型中,通常可以用一个连接来标识这类结构。
- Design of Conceptual Data Model for Database of Radar Electronic Warfare Equipment Simulation 雷达电子战设备仿真数据库概念模型设计
- Design of ER conceptual data model for database of radar active jamming equipment 雷达有源干扰设备数据库ER概念模型建模
- Research on Conceptual Data Model and Data Element of Health Information Standand 卫生信息概念数据模型与数据元标准研究
- synoptically introduces the object-oriented approach and UML;creates the CDM(Conceptual Data Model) and the PDM(Physical Data Model) based on ORACLE9i with PowerDesigner; 运用PowerDesigner建立了数据的概念模型和以Oracle9i为数据库系统平台的物理数据模型;
- conceptual data model 概念数据模型
- 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.
- The Entity Framework supports an Entity Data Model for defining data at both the relational and conceptual level and a mapping between the two. 实体框架提供了称为实体数据模型的模型,该模型能在关系以及概念层上定义数据,并且在两者之间定义映射。
- In data modeling and analysis, finite mixture is widely used. 摘要在数据建模和分析中,有限混合体模型被广泛地使用着。
- 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。
- 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。
- Integration takes place in the user interface and the data model. 集成发生在用户界面和数据模型中。
- This logical data model is called a data source view. 此逻辑数据模型称为数据源视图。