能否选择恰当的数据概念模型和数据库结构设计方法是数据库设计能否获得成功的关键所在。
Whether selecting right data concept model and database structure design method or not is the key problem of database design.
概念模型是一个计算机可读的数据结构，其中包含原始文本中出现的主要概念以及它们之间的一些关系。
A concept Model is a computer-readable data structure containing the primary concepts that appear in the original text and some of their relationships.
它包含了与表格列相对应的属性，并允许应用程序直接与数据库的概念模型相联系。
It contains attributes that correspond to the table columns, and it allows applications to interact directly with a conceptual model of the database.
在我们分析源数据库的时候，我们会发现我们的概念模型需要更新，以反映我们对领域的了解改进了。
As we analyze the source databases we'll discover that our conceptual model needs updating to reflect our improved understanding of the domain.
它支持开发人员使用概念模型查询和操作数据，而无需使用物理存储模型。
It enables developers to query and manipulate data using a conceptual model instead of a physical storage model.
在精化阶段，我会建议将概念模型中的业务实体映射到遗留系统中的源数据库。
During the Elaboration phase I would suggest mapping business entities within the conceptual model to the source databases within the legacy systems.
服务分析模型中表达的结构是概念模型(或没有概念模型情况下的逻辑数据模型)中的结构的直接反映。
The structures expressed within the service analysis model are a direct reflection of those within the conceptual model (or logical data model where no conceptual model formally exists).
语义Web服务(SWS)可看作是Web服务之上的集成层；它们使用本体作为数据模型并且拥有丰富的概念模型。
Semantic Web services (SWS) can be considered an integration layer on top of Web services; they use ontologies as data model and they have a rich conceptual model.
数据建模中一种常见并被长期使用的设计模式是将数据模型分为三部分：概念模型、逻辑模型和物理模型。
A longstanding and common design pattern for data modeling is the division of the data model into three parts: a conceptual model, a logical model, and a physical model.
一个附带的好处是，开发人员可以在一个稳定的概念模型上进行工作，即使跨越多个数据引擎。
An additional benefit is that developers can work with a consistent conceptual model across multiple storage engines.
其实质是在本体概念模型的指导下，实现对学术资源数据的语义标注，完成领域内的知识描述。
Its essence is to realize semantic annotation of academic resources data and complete the domain knowledge description under the guidance of the conceptual model of the ontology.
提出了采用模糊技术与数据合成技术等相结合来解决上述问题的概念模型。
A conceptual model to solve those problems by means of fuzzy logic technique, data fusion technique etc. is presented in this paper.
建立数据模型是构造数据仓库的重要步骤之一，多维数据模型是数据仓库设计中广泛采用的概念模型。
Constructing data model is one of important steps for building data Warehouse. Multidimensional model is a conceptual model widely used in data Warehouse designing.
讨论了基于特征的概念模型要素及相互关系；提出了基于特征的时空数据模型所面临的关键技术。
The conceptual modeling elements and mutual relations between them are discussed and some key technical problems are identified in the development of feature based temporal - spatial data models.
开发人员可以使用一个相对稳定应用程序概念模型工作，并将这一模型映射到多种存储架构。例如不同的数据库管理系统的实现。
Developers can work with a consistent application object model that can be mapped to various storage schemas, possibly implemented in different database management systems.
NET实体框架可以帮助您开发应用程序，以便您可以将数据用作在概念模型中定义的实体。
NET Entity Framework helps you develop applications in which you work with data as entities that are defined in a conceptual model.
论述了课表编排系统数据库的概念模型、逻辑模型以及物理模型的设计和规范化设计。
Discusses the designs of concept models, logic models, physical models and standardization of the database in timetable planning system.
然后论文结合数字国土方面的特点对空间数据仓库的需求设计进行了研究，包括主题的确定，概念模型的建立等。
Thesis then combined figure of Homeland characteristics of spatial data warehouse design research, including subject identification, and the concept of the model building etc.
文章主要介绍了数据仓库的概况，并以保险代理业务数据仓库为实例进一步提出了建立其数据仓库的概念模型和逻辑模型设计方案。
This paper mainly introduced the data warehouse, and as a insurance agency data warehouse for an example, we presented the concept model and logical model of the data warehouse.
演示如何查询概念模型和使用对象数据。
Demonstrates how to query a conceptual model and work with object data.
本文按照数据库设计方法学流程，采用EER概念模型和分布式数据库技术，对多生理参数网络数据库的设计进行了阐述。
According to the design flow of the database, this paper develops a multi-physiological parameter network database with EER concept model and distributed database technology.
下面的主题显示如何创建和使用连接到数据的概念模型。
The following topics show how to create and use conceptual models to connect to data.
本体作为一种能在语义层面上描述信息和数据的概念模型，为解决该类问题提供了一种良好途径。
As a concept model which can describe information and data on the semantic level, ontology presents a better way to solve these problems.
该方法给出一套能对实际业务对象进行完整描述的概念模型，并给出相应的数据结构设计，从而得到一种统一的数据库概念模型设计框架。
It gives a suite of modeling concepts which can completely describe the business objects. And the data structures are presented. Therefore, a uniform database concept design framework is achieved.
同时，为使高层应用易于对模型进行有效性和一致性检查，采用超图数据结构形式化地定义了上述模型的概念模型。
Besides, in order to facilitate applications to check affectivity and consistency of this model, a formal concept model based on hyper-graph data structure is proposed.
论文为不同格式的数据源提供了一个统一的概念模型，并定义了各种信息源到概念模型的转换规则。
This paper provides a conceptual model for different format data sources, defines a set of rules from information source to conceptual model.
系统的设计开发是建立数据的概念模型、逻辑模型、物理模型的过程。
The conceptional model, the logistic model, the physical model of the data were established in the process of designing and development of the assistant analysis system.
其中数据仓库模型从概念模型、逻辑模型和物理模型三个方面进行讨论。
The warehouse model of data was discussed from three aspects which were conceptual model, logic model and physical model.
其中数据仓库模型从概念模型、逻辑模型和物理模型三个方面进行讨论。
The warehouse model of data was discussed from three aspects which were conceptual model, logic model and physical model.
应用推荐