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简答题 现有如下两个关系模式:Employees(Eid,Name,DeptNO)Departments(Dept NO,DeptName,TotalNumber)Employees关系模式描述了职工编号、姓名和所在部门编号;Departments关系模式描述了部门编号、名称和职工总人数。请按SQL Server所采用的Tansact-SQL语法格式编写实现具有功能的后触发型触发器:每当在Employees表中插入一行数据时,相应部门的职工总人数就加1。

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A 根据下面短文回答下列问题。 There were many people on the bus. When a young man got into the bus, an old woman wanted to stand up, but the young man said, "Thank you. Please don’t do that." "But young man, let me stand ..." "I want you to sit there," the young man said with a hand on her shoulder. But the old woman tried to stand up and said, "Young man, please let me stand ..." "No, no." said the young man and made her sit down again. The old woman wanted to let the young man sit down on the seat. [A] True [B] False

At last the old woman said, "What’s wrong with you, young man You made me go three stops beyond (超时) my home. I wanted to get off.\

简述欧洲债券发行程序及当事人与外国债券的不同之处。

5岁,上前牙外伤2小时,要求治疗。 临床检查露髓点0.5mm,牙根无异常,应给予的治疗是

A. 直接恢复外形
B. 盖髓后修复
C. 根尖诱导成形术 D.根管治疗
D. 活髓切断术

事务T1,T2,T3分别对数据D1,D2,D3并发操作如下图所示,其中T1与T2间的并发操作存在的问题是 (1) 。T2与T3间的并发操作存在的问题是 (2) 。时间T1T2T3t1t2t3t4t5t6t7t8t9t10t11t12t13t14t15读D1=50读D2=100读D3=300x1=D1+D2+D3读D1=50读D2=200读D3=300x1=D1+D2+D3验证不对读D2=100读D3=300D2=D3-D2写D2读D2=100D2=D2+50写D2 2.()

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