摘要：对于【数据库系统工程师】软考考试而言，试题无疑是最重要的学习资料之一。在软考备考过程中，吃透试题、掌握试题所考知识点、熟悉试题的出题思路，对我们提升分数的效果是最明显的，通过对试题的反复练习，还可以查漏补缺。今天，给大家带来【2019年5月 数据库系统工程师 上午题】部分试题的详解，一起来看看吧~



1、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:(请作答此空) 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、 rectangles
B、 llises
C、 diamonds
D、 lines

答案:A
答题解析:

第71-75题 参考答案：C、B、A、B、D

习题解析：本题考查计算机英语。

题目中的英文原文翻译入学，下面加粗的文字标识相应填入的单词中文。

实体关系（E-R）数据模型基于对真实世界的感知，真实世界由一组基本对象（称为实体）和这些对象之间的关系组成。（71）实体是现实世界中区别于其他对象的“事物”或“对象”。实体在数据库中由一组（72）属性描述。关系是多个实体之间的关联。同一类型的所有实体集和同一类型的所有关系集分别称为实体集和关系集。数据库的总体逻辑结构（schema）可以用E-R图来表示，E-R图是由下面组件构成的：（73）矩形表示实体集，（74）椭圆表示属性等。除了实体和关系之外，E-R模型还表示数据库内容必须符合的某些（75）约束。实体关系模型在数据库设计中有着广泛的应用。

2、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(请作答此空) : 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、 keys
B、 attributes
C、 records
D、 Rows

答案:B
答题解析:

第71-75题 参考答案：C、B、A、B、D

习题解析：本题考查计算机英语。

题目中的英文原文翻译入学，下面加粗的文字标识相应填入的单词中文。

实体关系（E-R）数据模型基于对真实世界的感知，真实世界由一组基本对象（称为实体）和这些对象之间的关系组成。（71）实体是现实世界中区别于其他对象的“事物”或“对象”。实体在数据库中由一组（72）属性描述。关系是多个实体之间的关联。同一类型的所有实体集和同一类型的所有关系集分别称为实体集和关系集。数据库的总体逻辑结构（schema）可以用E-R图来表示，E-R图是由下面组件构成的：（73）矩形表示实体集，（74）椭圆表示属性等。除了实体和关系之外，E-R模型还表示数据库内容必须符合的某些（75）约束。实体关系模型在数据库设计中有着广泛的应用。

3、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

答案:C
答题解析:

第71-75题 参考答案：C、B、A、B、D

习题解析：本题考查计算机英语。

题目中的英文原文翻译入学，下面加粗的文字标识相应填入的单词中文。

实体关系（E-R）数据模型基于对真实世界的感知，真实世界由一组基本对象（称为实体）和这些对象之间的关系组成。（71）实体是现实世界中区别于其他对象的“事物”或“对象”。实体在数据库中由一组（72）属性描述。关系是多个实体之间的关联。同一类型的所有实体集和同一类型的所有关系集分别称为实体集和关系集。数据库的总体逻辑结构（schema）可以用E-R图来表示，E-R图是由下面组件构成的：（73）矩形表示实体集，（74）椭圆表示属性等。除了实体和关系之外，E-R模型还表示数据库内容必须符合的某些（75）约束。实体关系模型在数据库设计中有着广泛的应用。

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