niusouti.com

The entity-relationship（E-R）data model is based on a perception of a real world that consists of a clletion of basic objects,called（请作答此空），and of relationships among these objects.An entity is a“thing”or"object"in the real world that is distinguishable fr

题目
The entity-relationship（E-R）data model is based on a perception of a real world that consists of a clletion of basic objects,called（请作答此空），and of relationships among these objects.An entity is a“thing”or"object"in the real world that is distinguishable from other objects.Entities are described in a database by asetof（ ）:A relationship isan association among several entities.The set of all entities of the same type and the set of all relationships of the ametype are termed an entity sct and relationship set,respectively.The overall logical structure（schema）of a database can be expressed graphically by an E-R diagram,which is built up from the fllowing components:（ ）represent entity set,（ ）represent atributes,ete.In addition to entities and relations,the E-R model represents certain（ ）to which thecontents of a database must conform.The entity-relationship model is widely used in database design.

A.data
B.things
C.entities
D.objects
相似考题

1.System analysis is traditionally done top-down using structured analysis based on（ ）. Object-oriented analysis focuses on creation of models. The three types of theanalysis model are（ ）. There are two substages of object-oriented analysis.（ ）focuses on real-world things whose semantics the application captures. The object constructedin the requirement analysis shows the（ ）of the real-world system and organizes it intoworkable pieces.（ ）addresses the computer aspects of the application that are visible tousers. The objects are those which can be expected to vary from time to time quite rapidly.A.functional decomposition B.object abstraction C.data inheritance D.information generalization A.function model，class model and state model B.class model，interaction model and state model C.class model，interaction model and sequence model D.function model，interaction model and state model A.Static analysis B.Semantic analysis C.Scope analysis D.Domain analysis A.static structure B.system components C.data flows D.program procedures A.Program analysis B.Function requirement C.Application analysis D.Physical model

2.analysis emphasizes the drawing of pictorial system models to document and validate both existing and/or proposed systems. Ultimately, the system models become the(72)for designing and constructing an improved system.(73)is such a technique. The emphasis in this technique is process-centered. Systems analysts draw a series of process models called(74).(75)is another such technique that integrates data and process concerns into constructs called objects.A．PrototypingB．AcceleratedC．Model-drivenD．Iterative

3.The basic concept of a data(72)is the difference between data and information.A．warehouseB．storageC．baseD．service

4.● System analysis is traditionally done top-down using structured analysis based on （71）. Object-oriented analysis focuses on creation of models. The three types of theanalysis model are （72）. There are two substages of object-oriented analysis. （73） focuses on real-world things whose semantics the application captures. The object constructedin the requirement analysis shows the （74） of the real-world system and organizes it intoworkable pieces.（75）addresses the computer aspects of the application that are visible tousers. The objects are those which can be expected to vary from time to time quite rapidly.（71）A. functional decompositionB. object abstractionC. data inheritanceD. information generalization（72）A. function model，class model and state modelB. class model，interaction model and state modelC. class model，interaction model and sequence modelD. function model，interaction model and state model（73）A. Static analysisB. Semantic analysisC. Scope analysisD. Domain analysis（74）A. static structureB. system componentsC. data flowsD. program procedures（75）A. Program analysisB. Function requirementC. Application analysisD. Physical model

更多“The entity-relationship（E-R）data model is based on a perception of a real world that consists of a clletion of basic objects,called（请作答此空），and of relationships among these objects.An entity is a“thin”相关问题

  • 第1题：

    Object-oriented DBMS integrated a variety of(81)data types-such as business procedures, graphics, pictures, voice and annotated text.Object orientation also makes a(82)to application development efficiency. It makes the data, functions, attributes, and relationships an integral part of the(83). In this way, objects can be reused and replicated.Some leading RDBMS vendors support the concept of integrating object management capabilities with their current line of relational products. That capability enable users to the development cycle, since integrity logic and business roles no longer need to be programmed(84)each application.

    A．tool

    B．in

    C．idea

    D．contribution

    E．real-world


    正确答案：E

  • 第2题：

    System analysis is traditionally done top-down using structured analysis based on (71) ．Object-oriented analysis focuses on creation of models．The three types of the analysis model are (72) ．There are two substages of object-oriented analysis． (73) focuses on real-world things whose semantics the application captures．The object constructed in the requirement analysis shows the (74) of the real-world system and organizes it into workable pieces． (75) addresses the computer aspects ofthe application that are visible to users．The objects are those which can be expected to vary from time to time quite rapidly．

    （71）

    A．functional decomposition

    B．object abstraction

    C．data inheritance

    D．information generalization


    正确答案：A

  • 第3题：

    It should go without saying that the focus of UML is modeling.However,what that means,exactly,can be an open-ended question.（ ）is a means to capture ideas,relationships,decisions,and requirements in a well-defined notation that can be applied to many different domains.Modeling not only means different things to different people,but also it can use different pieces of UML depending on what you are trying to convey.In general,a UML model is made up of one or more（ ）.A diagram graphically represents things,and the relationships between these things.These（ ）can be representations of real-world objects,pure software constructs,or a description of the behavior of some other objects.It is common for an individual thing to show up on multiple diagrams;each diagram represents a particular interest,or view,of the thing being modeled.UML 2.0 divides diagrams into two categories:structural diagrams and behavioral diagrams.（ ）are used to capture the physical organization of the things in your system,i.e.,how one object relates to another.（请作答此空）focus on the behavior of elements in a system.For example,you can use behavioral diagrams to capture requirements,operations,and internal state changes for elements.

    A.Activity diagrams
    B.Use-case diagrams
    C.Structural diagrams
    D.Behavioral diagrams

    答案：D
    解析：
    UML的核心关注内容是建模。然而建模是一个开放性的问题。建模是采用合适并预先定义的符号来描述捕获的思想、关系、决策和需求，并且建模可应用到多个领域。建模对不同的人有不同的含义，可以使用UML中不同的部分来描述你所要涵盖的内容。一般来说，UML模型是由一个或者多个diagram组成。一个diagram使用图形化的方式描述了事物以及事物之间的关系，而事物代表了真实世界中的对象、软件构件或对象行为。常常一个独立的事物会在多个diagram中展现，每个diagram建模了该事物的不同方面。UML 2.0将diagram分为两大类：结构化diagram和行为diagram。结构化diagram主要用于捕获系统的物理组织结构，如一个对象与其他对象的关系。行为diagram则用于捕获需求、操作以及元素内部状态的变化。

  • 第4题：

    System analysis is traditionally done top-down using structured analysis based on（ ）.Object-oriented analysis focuses on creation of models.The three types of theanalysis model are（ ）.There are two substages of object-oriented analysis.（ ）focuses on real-world things whose semantics the application captures.The object constructedin the requirement analysis shows the（请作答此空）of the real-world system and organizes it intoworkable pieces.（ ）addresses the computer aspects of the application that are visible tousers.The objects are those which can be expected to vary from time to time quite rapidly.

    A.static structure
    B.system components
    C.data flows
    D.program procedures

    答案：A
    解析：
    传统的系统分析以功能分解为基础，利用结构化分析自顶向下完成。面向对象分析关注于模型的创建。该分析模型有三种类型：类模型、交互模型和状态模型。面向对象分析有两个子阶段。领域分析侧重于现实世界中那些语义被应用程序获取的事物。在需求分析中所构造的对象说明了现实世界系统的静态结构并将其组织为可用的片段。应用分析处理应用系统中用户可见的计算机问题。所分析的对象可能会被预计时不时地发生较快的变化。

  • 第5题：

    System analysis is traditionally done top-down using structured analysis based on（ ）.Object-oriented analysis focuses on creation of models.The three types of theanalysis model are（ ）.There are two substages of object-oriented analysis.（请作答此空）focuses on real-world things whose semantics the application captures.The object constructedin the requirement analysis shows the（ ）of the real-world system and organizes it intoworkable pieces.（ ）addresses the computer aspects of the application that are visible tousers.The objects are those which can be expected to vary from time to time quite rapidly.

    A.Static analysis
    B.Semantic analysis
    C.Scope analysis
    D.Domain analysis

    答案：D
    解析：
    传统的系统分析以功能分解为基础，利用结构化分析自顶向下完成。面向对象分析关注于模型的创建。该分析模型有三种类型：类模型、交互模型和状态模型。面向对象分析有两个子阶段。领域分析侧重于现实世界中那些语义被应用程序获取的事物。在需求分析中所构造的对象说明了现实世界系统的静态结构并将其组织为可用的片段。应用分析处理应用系统中用户可见的计算机问题。所分析的对象可能会被预计时不时地发生较快的变化。

  • 第6题：

    （ ）analysis emphasizes the drawing of pictorial system models to document and validate both existing and/or proposed systems.Ultimately,the system models become the（ ）for designing and constructing an improved system.（ ）is such a technique.The emphasis in this technique is process-centered.Systems analysts draw a series of process models called（ ）、（请作答此空）is another such technique that integrates data and process concerns into constructs called objects.

    A.Structured analysis
    B.Information Engineering
    C.Discovery Prototyping
    D.Object-Oriented analysis

    答案：D
    解析：
    模型驱动的分析方法强调通过绘制图形化的系统模型来说明和验证已有的或待开发的系统。这些系统模型最终会成为设计和构建改进后的系统的蓝图。结构化分析就是这样一种方法，它是以过程为中心的。在结构化分析方法中，系统分析员所绘制的一系列过程模型被称为DFD。面向对象分析是另外一种模型驱动的分析方法，它将数据和过程统一到了一个被称为"对象"的结构中。

  • 第7题：

    System analysis is traditionally done top-down using structured analysis based on____.Object-oriented analysis focuses on creation of models.The three types of the analysis model are____.There are two substages of object-oriented analysis.____focuses on real-world things whose semantics the application captures.The object constructed in the requirement analysis shows the__请作答该选项__of the real-world system and organizes it into workable pieces.____addresses the computer aspects of the application that are visible to users.The objects are those which can be expected to vary from time to time quite rapidly.

    A.static structure
    B.system components
    C.data flows
    D.program procedures

    答案：A
    解析：
    传统的系统分析以功能分解为基础，利用结构化分析自顶向下完成。面向对象分析关注于模型的创建。该分析模型有三种类型：类模型、交互模型和状态模型。面向对象分析有两个子阶段。领域分析侧重于现实世界中那些语义被应用程序获取的事物。在需求分析中所构造的对象说明了现实世界系统的静态结构并将其组织为可用的片段。应用分析处理应用系统中用户可见的计算机问题。所分析的对

  • 第8题：

    System analysis is traditionally done top-down using structured analysis based on____.Object-oriented analysis focuses on creation of models.The three types of the analysis model are___.There are two substages of object-oriented analysis.__请作答次选项__focuses on real-world things whose semantics the application captures.The object constructed in the requirement analysis shows the____of the real-world system and organizes it into workable pieces.____addresses the computer aspects of the application that are visible to users.The objects are those which can be expected to vary from time to time quite rapidly.

    A.Static analysis
    B.Semantic analysis
    C.Scope analysis
    D.Domain analysis

    答案：D
    解析：
    传统的系统分析以功能分解为基础，利用结构化分析自顶向下完成。面向对象分析关注于模型的创建。该分析模型有三种类型：类模型、交互模型和状态模型。面向对象分析有两个子阶段。领域分析侧重于现实世界中那些语义被应用程序获取的事物。在需求分析中所构造的对象说明了现实世界系统的静态结构并将其组织为可用的片段。应用分析处理应用系统中用户可见的计算机问题。所分析的对

  • 第9题：

    System analysis is traditionally done top-down using structured analysis based on____.Object-oriented analysis focuses on creation of models.The three types of the analysis model are__请作答此选项__.There are two substages of object-oriented analysis.____focuses on real-world things whose semantics the application captures.The object constructed in the requirement analysis shows the____of the real-world system and organizes it into workable pieces.____addresses the computer aspects of the application that are visible to users.The objects are those which can be expected to vary from time to time quite rapidly.

    A.function model,class model and state model
    B.class model,interaction model and state model
    C.class model,interaction model and sequence model
    D.function model,interaction model and state model

    答案：B
    解析：
    传统的系统分析以功能分解为基础，利用结构化分析自顶向下完成。面向对象分析关注于模型的创建。该分析模型有三种类型：类模型、交互模型和状态模型。面向对象分析有两个子阶段。领域分析侧重于现实世界中那些语义被应用程序获取的事物。在需求分析中所构造的对象说明了现实世界系统的静态结构并将其组织为可用的片段。应用分析处理应用系统中用户可见的计算机问题。所分析的对

  • 第10题：

    （ ） is used to model aggregates of information and the relationships these aggregates have to other.

    A.DatA.flow diagram
    B. Entity relationship diagram
    C.Sequence diagram
    D.Structure diagram

    答案：B
    解析：
    翻译：

    （72）用于模拟信息集和这些聚集体与其他聚集体的关系。

    A. 数据流图B. 实体关系图

    C. 序列图D. 结构图

  • 第11题：

    System analysis is traditionally done top-down using structured analysis based on（ ）. Object-oriented analysis focuses on creation of models. The three types of theanalysis model are（ ）. There are two substages of object-oriented analysis.（ ） focuses on real-world things whose semantics the application captures. The object constructedin the requirement analysis shows the（ ）of the real-world system and organizes it intoworkable pieces.（请作答此空）addresses the computer aspects of the application that are visible tousers. The objects are those which can be expected to vary from time to time quite rapidly.




    A. Program analysis
    B. Function requirement
    C. Application analysis
    D. Physical model

    答案：C
    解析：
    传统的系统分析以功能分解为基础，利用结构化分析自顶向下完成。面向对象分析关注于模型的创建。该分析模型有三种类型：类模型、交互模型和状态模型。面向对象分析有两个子阶段。领域分析侧重于现实世界中那些语义被应用程序获取的事物。在需求分析中所构造的对象说明了现实世界系统的静态结构并将其组织为可用的片段。应用分析处理应用系统中用户可见的计算机问题。所分析的对象可能会被预计时不时地发生较快的变化。

  • 第12题：

    System analysis is traditionally done top-down using structured analysis based on（ ）. Object-oriented analysis focuses on creation of models. The three types of theanalysis model are（ ）. There are two substages of object-oriented analysis.（ ） focuses on real-world things whose semantics the application captures. The object constructedin the requirement analysis shows the（请作答此空）of the real-world system and organizes it intoworkable pieces.（ ）addresses the computer aspects of the application that are visible tousers. The objects are those which can be expected to vary from time to time quite rapidly.


    A. static structure
    B. system components
    C. data flows
    D. program procedures


    答案：A
    解析：
    传统的系统分析以功能分解为基础，利用结构化分析自顶向下完成。面向对象分析关注于模型的创建。该分析模型有三种类型：类模型、交互模型和状态模型。面向对象分析有两个子阶段。领域分析侧重于现实世界中那些语义被应用程序获取的事物。在需求分析中所构造的对象说明了现实世界系统的静态结构并将其组织为可用的片段。应用分析处理应用系统中用户可见的计算机问题。所分析的对象可能会被预计时不时地发生较快的变化。

  • 第13题：

    （ ）is used to model aggregates of information and the relationships these aggregates have to other.

    A.Data flow diagram B.Entity relationship diagram C.Sequence diagram D.Structure diagram


    正确答案：B

  • 第14题：

    The entity-relationship（E-R）data model is based on a perception of a real world that consists of a clletion of basic objects,called（ ），and of relationships among these objects.An entity is a“thing”or"object"in the real world that is distinguishable from other objects.Entities are described in a database by asetof（ ）:A relationship isan association among several entities.The set of all entities of the same type and the set of all relationships of the ametype are termed an entity sct and relationship set,respectively.The overall logical structure（schema）of a database can be expressed graphically by an E-R diagram,which is built up from the fllowing components:（ ）represent entity set,（ ）represent atributes,ete.In addition to entities and relations,the E-R model represents certain（请作答此空）to which thecontents of a database must conform.The entity-relationship model is widely used in database design.

    A.things
    B.objects
    C.conditions
    D.constrains

    答案：D
    解析：

  • 第15题：

    （请作答此空）analysis emphasizes the drawing of pictorial system models to document and validate both existing and/or proposed systems.Ultimately,the system models become the（ ）for designing and constructing an improved system.（ ）is such a technique.The emphasis in this technique is process-centered.Systems analysts draw a series of process models called（ ）、（ ）is another such technique that integrates data and process concerns into constructs called objects.

    A.Prototyping
    B.Accelerated
    C.Model-driven
    D.Iterative

    答案：C
    解析：
    模型驱动的分析方法强调通过绘制图形化的系统模型来说明和验证已有的或待开发的系统。这些系统模型最终会成为设计和构建改进后的系统的蓝图。结构化分析就是这样一种方法，它是以过程为中心的。在结构化分析方法中，系统分析员所绘制的一系列过程模型被称为DFD。面向对象分析是另外一种模型驱动的分析方法，它将数据和过程统一到了一个被称为"对象"的结构中。

  • 第16题：

    System analysis is traditionally done top-down using structured analysis based on（ ）.Object-oriented analysis focuses on creation of models.The three types of theanalysis model are（ ）.There are two substages of object-oriented analysis.（ ）focuses on real-world things whose semantics the application captures.The object constructedin the requirement analysis shows the（ ）of the real-world system and organizes it intoworkable pieces.（请作答此空）addresses the computer aspects of the application that are visible tousers.The objects are those which can be expected to vary from time to time quite rapidly.

    A.Program analysis
    B.Function requirement
    C.Application analysis
    D.Physical model

    答案：C
    解析：
    传统的系统分析以功能分解为基础，利用结构化分析自顶向下完成。面向对象分析关注于模型的创建。该分析模型有三种类型：类模型、交互模型和状态模型。面向对象分析有两个子阶段。领域分析侧重于现实世界中那些语义被应用程序获取的事物。在需求分析中所构造的对象说明了现实世界系统的静态结构并将其组织为可用的片段。应用分析处理应用系统中用户可见的计算机问题。所分析的对象可能会被预计时不时地发生较快的变化。

  • 第17题：

    （ ）analysis emphasizes the drawing of pictorial system models to document and validate both existing and/or proposed systems.Ultimately,the system models become the（请作答此空）for designing and constructing an improved system.（ ）is such a technique.The emphasis in this technique is process-centered.Systems analysts draw a series of process models called（ ）、（ ）is another such technique that integrates data and process concerns into constructs called objects.

    A.image
    B.picture
    C.layout
    D.blueprint

    答案：D
    解析：
    模型驱动的分析方法强调通过绘制图形化的系统模型来说明和验证已有的或待开发的系统。这些系统模型最终会成为设计和构建改进后的系统的蓝图。结构化分析就是这样一种方法，它是以过程为中心的。在结构化分析方法中，系统分析员所绘制的一系列过程模型被称为DFD。面向对象分析是另外一种模型驱动的分析方法，它将数据和过程统一到了一个被称为"对象"的结构中。

  • 第18题：

    System analysis is traditionally done top-down using structured analysis based on（ ）.Object-oriented analysis focuses on creation of models.The three types of theanalysis model are（请作答此空）.There are two substages of object-oriented analysis.（ ）focuses on real-world things whose semantics the application captures.The object constructedin the requirement analysis shows the（ ）of the real-world system and organizes it intoworkable pieces.（ ）addresses the computer aspects of the application that are visible tousers.The objects are those which can be expected to vary from time to time quite rapidly.

    A.function model，class model and state model
    B.class model，interaction model and state model
    C.class model，interaction model and sequence model
    D.function model，interaction model and state model

    答案：B
    解析：
    传统的系统分析以功能分解为基础，利用结构化分析自顶向下完成。面向对象分析关注于模型的创建。该分析模型有三种类型：类模型、交互模型和状态模型。面向对象分析有两个子阶段。领域分析侧重于现实世界中那些语义被应用程序获取的事物。在需求分析中所构造的对象说明了现实世界系统的静态结构并将其组织为可用的片段。应用分析处理应用系统中用户可见的计算机问题。所分析的对象可能会被预计时不时地发生较快的变化。

  • 第19题：

    System analysis is traditionally done top-down using structured analysis based on__请作答此选项__.Object-oriented analysis focuses on creation of models.The three types of the analysis model are____.There are two substages of object-oriented analysis.___focuses on real-world things whose semantics the application captures.The object constructed in the requirement analysis shows the____of the real-world system and organizes it into workable pieces.____addresses the computer aspects of the application that are visible to users.The objects are those which can be expected to vary from time to time quite rapidly.

    A.functional decomposition
    B.object abstraction
    C.data inheritance
    D.information generalization

    答案：A
    解析：
    传统的系统分析以功能分解为基础，利用结构化分析自顶向下完成。面向对象分析关注于模型的创建。该分析模型有三种类型：类模型、交互模型和状态模型。面向对象分析有两个子阶段。领域分析侧重于现实世界中那些语义被应用程序获取的事物。在需求分析中所构造的对象说明了现实世界系统的静态结构并将其组织为可用的片段。应用分析处理应用系统中用户可见的计算机问题。所分析的对

  • 第20题：

    System analysis is traditionally done top-down using structured analysis based on____.Object-oriented analysis focuses on creation of models.The three types of the analysis model are____.There are two substages of object-oriented analysis.____focuses on real-world things whose semantics the application captures.The object constructed in the requirement analysis shows the___of the real-world system and organizes it into workable pieces.__请作答该选项__addresses the computer aspects of the application that are visible to users.The objects are those which can be expected to vary from time to time quite rapidly.

    A.Program analysis
    B.Function requirement
    C.Application analysis
    D.Physical model

    答案：C
    解析：
    传统的系统分析以功能分解为基础，利用结构化分析自顶向下完成。面向对象分析关注于模型的创建。该分析模型有三种类型：类模型、交互模型和状态模型。面向对象分析有两个子阶段。领域分析侧重于现实世界中那些语义被应用程序获取的事物。在需求分析中所构造的对象说明了现实世界系统的静态结构并将其组织为可用的片段。应用分析处理应用系统中用户可见的计算机问题。所分析的对

  • 第21题：

    The __请作答该选项__ is a general description of the architecture of a workflow management system used by the WFMC, in which the main components and the associated interfaces are summarizeD．The workflow enactment service is the heart of a workflow system which consists of several ____.

    A.waterfall model
    B.workflow reference model
    C.evolutionary model
    D.spiral model

    答案：B
    解析：

  • 第22题：

    System analysis is traditionally done top-down using structured analysis based on（ ）. Object-oriented analysis focuses on creation of models. The three types of theanalysis model are（请作答此空）. There are two substages of object-oriented analysis.（ ）focuses on real-world things whose semantics the application captures. The object constructedin the requirement analysis shows the（ ）of the real-world system and organizes it intoworkable pieces.（ ）addresses the computer aspects of the application that are visible tousers. The objects are those which can be expected to vary from time to time quite rapidly.



    A.. funC.tion moD.el，C.lA.ss moD.el A.nD. stA.te moD.el
    B.. C.lA.ss moD.el，interA.C.tion moD.el A.nD. stA.te moD.el
    C.. C.lA.ss moD.el，interA.C.tion moD.el A.nD. sequenC.e moD.el
    D.. funC.tion moD.el，interA.C.tion moD.el A.nD. stA.te moD.el

    答案：B
    解析：
    传统的系统分析以功能分解为基础，利用结构化分析自顶向下完成。面向对象分析关注于模型的创建。该分析模型有三种类型：类模型、交互模型和状态模型。面向对象分析有两个子阶段。领域分析侧重于现实世界中那些语义被应用程序获取的事物。在需求分析中所构造的对象说明了现实世界系统的静态结构并将其组织为可用的片段。应用分析处理应用系统中用户可见的计算机问题。所分析的对象可能会被预计时不时地发生较快的变化。

  • 第23题：

    System analysis is traditionally done top-down using structured analysis based on（ ）. Object-oriented analysis focuses on creation of models. The three types of theanalysis model are（ ）. There are two substages of object-oriented analysis.（请作答此空） focuses on real-world things whose semantics the application captures. The object constructedin the requirement analysis shows the（ ）of the real-world system and organizes it intoworkable pieces.（ ）addresses the computer aspects of the application that are visible tousers. The objects are those which can be expected to vary from time to time quite rapidly.


    A. Static analysis
    B. Semantic analysis
    C. Scope analysis
    D. Domain analysis


    答案：D
    解析：
    传统的系统分析以功能分解为基础，利用结构化分析自顶向下完成。面向对象分析关注于模型的创建。该分析模型有三种类型：类模型、交互模型和状态模型。面向对象分析有两个子阶段。领域分析侧重于现实世界中那些语义被应用程序获取的事物。在需求分析中所构造的对象说明了现实世界系统的静态结构并将其组织为可用的片段。应用分析处理应用系统中用户可见的计算机问题。所分析的对象可能会被预计时不时地发生较快的变化。

相关内容