2010年05月数据库系统工程师考试上午真题【基础知识】-软考吧-您身边的软考专家-www.ruankaoba.com

2010年05月数据库系统工程师考试上午真题【基础知识】

内容：基础知识
时间：150分钟
总分：75分
题数：75题

【62-63】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（62），在SQL99标准中可以使用（63）来实现。

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【64】不属于数据库访问接口的是（64）。

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【65】联机分析处理（OLAP）与联机事务处理（OLTP）的区别是（65）。

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【66-68】IP地址块222.125.80.128/26包含了（66）个可用主机地址，其中最小地址是（67），最大地址是（68）。

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【69】以下HTML代码中，创建指向邮箱地址的链接正确的是（69）。

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【70】POP3服务默认的TCP端口号是（70）。

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【71-75】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 choiceswaits or eats it raw. Software customers have had （71） choices.
Now I do not think software （72） have less inherent courage and firmness than chefs，nor than other engineering managers. But false （73） to match the patron’s desired date is much more common in our discipline than elsewhere in engineering. It is very （74） 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 （75） 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.

真题详情及解析