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【2020年11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、A database system is a collection of interrelated data and a set of programs that allowusers to access and modify these data. A major purpose of a database system is to provide userswith an (71) view of the data. That is, the system hides certain details of how the data arestored and maintained. For the system to be usable, it must retrieve data(72) . The need forefficiency has led designers to use complex data(73) to represent data in the database.Since many database -system users are not computer trained, developers hide the complexityfrom users through several levels of abstraction, to simplify users' interactions with the system.Physical level is the lowest level of abstraction that describes (74) the data are actually stored. Logical level is the next-higher level of abstraction that describes(75) data are stored in the database, and what relationships exist among those data. View level is the highestlevel of abstraction that describes only part of the entire database.
A、files
B、structures
C、graphs
D、flows

答案:B
答题解析:略

2、A database system is a collection of interrelated data and a set of programs that allowusers to access and modify these data. A major purpose of a database system is to provide userswith an (71) view of the data. That is, the system hides certain details of how the data arestored and maintained. For the system to be usable, it must retrieve data(72) . The need forefficiency has led designers to use complex data(73) to represent data in the database.Since many database -system users are not computer trained, developers hide the complexityfrom users through several levels of abstraction, to simplify users' interactions with the system.Physical level is the lowest level of abstraction that describes (74) the data are actually stored. Logical level is the next-higher level of abstraction that describes(75) data are stored in the database, and what relationships exist among those data. View level is the highestlevel of abstraction that describes only part of the entire database.
A、how
B、what
C、which
D、when

答案:A
答题解析:略

3、A database system is a collection of interrelated data and a set of programs that allowusers to access and modify these data. A major purpose of a database system is to provide userswith an (71) view of the data. That is, the system hides certain details of how the data arestored and maintained. For the system to be usable, it must retrieve data(72) . The need forefficiency has led designers to use complex data(73) to represent data in the database.Since many database -system users are not computer trained, developers hide the complexityfrom users through several levels of abstraction, to simplify users' interactions with the system.Physical level is the lowest level of abstraction that describes (74) the data are actually stored. Logical level is the next-higher level of abstraction that describes(75) data are stored in the database, and what relationships exist among those data. View level is the highestlevel of abstraction that describes only part of the entire database.
A、how
B、what
C、which
D、when

答案:B
答题解析:略

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