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【2021年数据库系统工程师模拟题上午】部分试题的详解，一起来看看吧~



1、盗窃信用卡的人的购买行为可能不同于信用卡持有者，信用卡公司通过分析不同于常见行为的变化来检测窃贼，这属于(       ) 分析。
A、 分类
B、 关联规则
C、 聚类
D、 离群点

答案:D
答题解析:

本题考查数据挖掘基础知识。

常见的数据挖掘类型如下：

（1）分类分析找出描述和区分数据类的模型，以便能够使用模型来预测类标号未知的对象。

（2）关联规则分析用于发现描述数据中强管理特征的模式。

（3）聚类旨在发现紧密相关的观测值组群，使得与不同族群的观察值相比，属于同一族群内的观测值尽量相似。

（4）离群点分析也称为异常检测，其目标是发现与大部分其他对象不同的对象。

（5）回归分析是确定两种或两种以上变量间相互依赖的定量关系的一种统计分析方法。

显然，答案为D选项。

2、While most recent attention in the AI field has been focused on expert system software, AI ( 71 ) hasalso seen dramatic advances. Activity in the past years was characterized by new low-cost, powerful Lisp machines, the introduction of AI workstations, Lisp compilers becoming available for all major professionaland engineering workstations, and the personal computer emerging as a ( 72 ) . tool for expert system development. The next few years will see this technology evolves further. Because the ( 73 ) of an AI computer represents a sizable investment, companies should carefully( 74 ) all options that are available as well as have a good idea of what the next generation of systems willoffer in order to ( 75 ) the optimum system. This publication provides the information necessary to gainthisunderstanding.
A、 software
B、 hardware
C、 choice
D、 lots of

答案:B
答题解析:无

3、While most recent attention in the AI field has been focused on expert system software, AI ( 71 ) hasalso seen dramatic advances. Activity in the past years was characterized by new low-cost, powerful Lisp machines, the introduction of AI workstations, Lisp compilers becoming available for all major professionaland engineering workstations, and the personal computer emerging as a ( 72 ) . tool for expert system development. The next few years will see this technology evolves further. Because the ( 73 ) of an AI computer represents a sizable investment, companies should carefully( 74 ) all options that are available as well as have a good idea of what the next generation of systems willoffer in order to ( 75 ) the optimum system. This publication provides the information necessary to gainthisunderstanding.
A、 testers
B、 emergence
C、 managers
D、 significant

答案:D
答题解析:

学好英语，一切都很简单。

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