Observe that for the programmer, as for the chef, the urgency of the patron (顾客)may govern the scheduled completion of the task, but it cannot govern the actual completion. An omelette(煎鸡蛋), promised in two minutes, may appear to be progressing nicely. But when it has not set in two minutes, the customer has two choices—waits or eats it raw. Software customers have had( )choices.
Now I do not think software( )have less inherent courage and firmness than chefs, nor than other engineering managers. But false( )to match the patron’s desired date is much more common in our discipline than elsewhere in engineering. It is very( )to make a vigorous, plausible, and job risking defense of an estimate that is derived by no quantitative method, supported by little data, and certified chiefly by the hunches of the managers.
Clearly two solutions are needed.We need to develop and publicize productivity figures, bug-incidence figures, estimating rules, and so on. The whole profession can only profit from( )such data.Until estimating is on a sounder basis, individual managers will need to stiffen their backbones and defend their estimates with the assurance that their poor hunches are better than wish derived estimates.
第 1 问
A. no
B. the same
C. other
D. lots of
第 2 问
A. testers
B. constructors
C. managers
D. architects
第 3 问
A. tasks
B. jobs
C. works
D. scheduling
第 4 问
A. easy
B. difficult
C. simple
D. painless
第 5 问
A. sharing
B. excluding
C. omitting
D. ignoring
以下 HTML代码中,创建指向邮箱地址的链接正确的是( )。
A. <a href="email:test@test.com">test@test.com</a>
B. <a href="emailto:test@test.com">test@test.com</a>
C. <a href="mail:test@test.com">test@test.com</a>
D. <a href="mailto:test@test.com">test@test.com</a>
联机分析处理(OLAP)与联机事务处理(OLTP)的区别是( )。
A. OLAP 针对数据库,OLTP 针对数据仓库
B. OLAP 要求响应时间合理,OLTP 要求响应时间快
C. OLAP 主要用于更新事务,OLTP 用于分析数据
D. OLAP 面向操作人员,OLTP 面向决策人员
对象关系数据库中,员工(工号,姓名,性别,联系电话)表中的联系电话为多值属性,则员工属于( ),在SQL99标准中可以使用( )来实现。
第 1 问
A. 非1NF关系
B. 1NF关系
C. 2NF关系
D. 3NF关系
第 2 问
A. 集合类型
B. CLOB 类型
C. BLOB 类型
D. 结构类型
某高校的管理系统中有学生关系为:学生(学号,姓名,性别,出生日期,班级),该关系的数据是在高考招生时从各省的考生信息库中导入的,来自同一省份的学生记录在物理上相邻存放,为适应高校对学生信息的大量事务处理是以班级为单位的应用需求,应采取的优化方案是( )。
A. 将学号设为主码
B. 对学号建立UNIQUE 索引
C. 对班级建立CLUSTER 索引
D. 对班级建立UNIQUE 索引