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- Data Model of Polar Science 极地数据模型
- Firstly, the data model and statistic model of UCA are introduced. 较为详细地介绍了圆阵列天线的阵列模型、统计模型和模式空间概念。
- The basic data model of transportation network is represented by node-arc model. 传统的交通网络数据模型是用结点-弧段模型来表示的。
- In LINQ to SQL, the data model of a relational database is mapped to an object model expressed in the programming language of the developer. 在LINQ to SQL中,关系数据库的数据模型映射到用开发人员所用的编程语言表示的对象模型。
- Study on XML data model of structured and half-structured and Web data shows that this model is fit for transition of heterogeneous data. 研究了结构化、半结构化以及网页数据的XML数据模型;该模型适合异构数据之间转换.
- On the aspect of data structure and data model, based on improving and extending the GDF data model, the data model of embedded GIS was put forwad. 在嵌入式GIS的数据结构与数据模型方面,在GDF数据模型的基础上进行了改进和扩充,提出了嵌入式GIS的数据模型。
- Based on the concept of data warehouse and data mart, we proposed the system structure and data model of a data warehouse for a compressor factory. 引用了数据仓库、数据集市的概念 ,探讨了以压缩机厂为背景的面向制造型企业数据仓库的系统结构和数据模型设计。
- 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。
- Then the content and structure of seabed sediment table data is analyzed and the data model of seabed sediment thematic digital map is confirmed. 分析了海洋底质表格数据的存储内容与结构,确定了海洋底质专题数字图的数据模型。
- The general data model of XML was studied, including the index-model, nesting-model and link-model to describe different types of entities. 同时,提出了一种XML的一般数据模型,包括描述实体的索引模型、嵌套模型和描述关系的链结模型。
- He showed us a model of the new office building. 他给我们看了新办公楼的模型。
- NHEDB is an extensible DBMS based on the relational DBMS(NHDB).The data model of the system is an extended relational model which supports ADT and NF2. NHEDB是在关系DBMS(NHDB)基础上研制的可扩充DBMS,系统采用扩充关系数据模型(主要是支持ADT和NF2。
- In this paper,we mainly use solid features such as Revolve,Blend,Pattern,Cut,Round and surface feature such as Merge to draw the 3D data model of the bucket bottom. 本文主要使用了Pro E零件模块中的旋转、混成、阵列、切割、倒圆等实体特征和merge等曲面特征 ,构造出桶底的三维数据模型。
- After proposing a data model of unordered node labeled tree for XML databases,this paper defines a functional dependency among XML subtrees.In addition,an axio... 在无序的结点标记树数据模型上定义了XML子树间的函数依赖,并且给出了一套公理系统用来推导函数依赖,以解决函数依赖的蕴涵问题,最后证明了该公理系统是合理的。
- He made a clay model of the Eiffel Tower. 他做了一个艾菲尔铁塔的黏土模型。
- 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。
- His mother is a model of industry. 他母亲是勤劳的模范。
- The received signal model of polarization sensitive array is established, under channel mismatching condition. 摘要在极化敏感阵列通道失配条件下,建立了极化敏感阵列接收信号误差模型。
- A kind of application data model of streetlight management GIS based on knowledge and rules is brought forward after mining and expressing knowledge and rules in streetlight. 本文描述和定义了路灯管理GIS中存在的知识与规则,提出了对其中存在的知识与规则的挖掘流程和方法。
- A mechanical model of the solar system. 太阳系仪太阳系的机械模型