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- The logical structure of data in a data base. The three best known models are the hierarchical model, the network model, and the relational model. 数据库中数据的逻辑结构,最常用的三种为层次模型、网状模型和关系模型。
- Compared with the hierarchical model, the relational model is quite complicated. 与层次模型相比,关系模型相当复杂。
- The relational model has been criticized as being unrealistic and oversimplified in various respects. 那表示关系的模型有是批评当做在不切实际的和过份地单纯化在各种不同的方面。
- With many accumulated relational data,using the relational model to analyze data apparently dissatisfies the demand. 随着大量关系数据的聚集,借助关系模型分析数据已明显不足。
- The Postgres project was started to address limitations of existing database-management implementations of the relational model. 在返回Berkeley之后,Stonebraker开始了一项后-Ingres计划来致力于解决关系模型的数据库管理现有实现的局限性。
- As one of DBMS which are aimed at network computing and supports object-oriented relational model,ORACLE8 has gotten wide-ranging application. ORACLE8数据库管理系统作为一种面向网络计算 ,并支持对象关系模型的产品已得到了广泛的应用。
- DPS software and the gray relational model and the calculation of green GDP between energy consumption and the environment. 运用DPS软件和灰色关联模型以及绿色GDP的测算分析了能源消费与环境关系。
- 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。
- And we built two relational models,one of them was about viscosity with glycerin and ethanol,the other was between surface tension and surface active agent. 并建立了粘度与甘油、乙醇和表面活性剂与表面张力的关系模型。
- This relational model of the paths between the main work areas of the kitchen describes a triangle between storage, preparation with cleaning and the cooking area. 这个关于厨房主要工作区域之间的路径的思维模式指的是介于储备、准备及清洗和烹饪之间的三角地带。
- The semantic category determines the slot relation model of the noun phrases. 名词的语义类别决定了名词短语的槽关系模型。
- Cognitive Functional Model, which is a semiotic relational model, aims at formulating and interpreting the semiotic relationship between content and expression. 认知功能模式是一种语符关系模式,旨在抽象构拟并阐释小句概念内容同语言表达之间的语符关系。
- Then, a relation-decomposing mapping method between FFM and relational model was put forward, and its mapping procedure and algorithm was put forward based on graph theory. 然后提出了一种FFM与关系模型的关系解析映射方法,给出了基于图论的具体映射过程与算法;
- Two relation models between the drill footage and proved reserves are introduced: Gompertz model and Exponential model. 摘要为估算油气探明储量,介绍了探井进尺和探明储量间的2种统计模型:龚帕兹模型和指数模型。
- Moreover, almost all relation models have relationship with the outranking relation in the ELECTRE method more or less. 而且,几乎所有的关系模型都与ELECTRE法中的级别高于关系有着或多或少的联系。
- In addition, ZTE, Jiangling, hippocampus and other related models also have the intention calibration. 此外,中兴、江铃、海马等相关车型也有标定意向。
- The company uses the relational model,and supports standards such as SQL and ODBC,and the company sports some high-profile customers including Compaq,Hewlett-Packard,and PointCast. 该公司采用关系模型,支持SQL、ODBC等标准,该公司还炫耀它有一些业界有影响的客户,如Compaq、HP和PointCast公司。
- The company uses the relational model, and supports standards such as SQL and ODBC, and the company sports some high-profile customers including Compaq, Hewlett-Packard, and PointCast. 该公司采用关系模型,支持SQL、ODBC等标准,该公司还炫耀它有一些业界有影响的客户,如Compaq、HP和PointCast公司。
- The declarative query language KBL is an extended Datalog, which is adaptable to non-first normal form relation model. 描述性查询语言KBL是DATALOG针对于非一范式关系模型的扩充。
- In makes an applied multi-level relation model to be basement of security database for following the BLP model. 为了适应BLP模型,采用一种实用的多级关系模型作为安全数据库的基础,这是原有关系模型的扩展。