User SCOTT executes the following command on the EMP table but has not issued COMMIT, ROLLBACK,or any data definition language (DDL) command: SQL> SELECT job FROM emp 2 WHERE job=’CLERK’ FOR UPDATE OF empno; SCOTT has opened another session to work with the database. Which three operations would wait when issued in SCOTT’s second session?() LOCK TABLE emp IN SHARE MODE;。 LOCK TABLE emp IN EXCLUSIVE MODE;。 DELETE FROM emp WHERE job=’MANAGER’;。 INSERT INTO emp(empno,ename) VALUES (1289,’Dick’);。 SELECT job FROM emp WHERE job=’CLERK’ FOR UPDATE OF empno;。
在平视情况下,用高花盆插S形,选用()。 倾斜式S形。 下垂式S形。 平卧式S形。 对称式S形。
A storage specialist is presenting DS5300 and mentions that the maximum available cache is 64GB. The customer asks if that cache is backed up to hard drives in the event of a power outage.From the following list, which competitor is most likely also talking to this customer?() EMC 。 HDS 。 SUN 。 NetA。
在进行企业的生产设计时,企业的形象首先应体现在哪个方面()。 生产工艺设计。 生产环境设计。 生产布局设计。 生产总体设计。
因子Ⅳ在凝血过程中主要起下列哪一个作用() 参与凝血第一阶段。 参与凝血第二阶段。 参与凝血第三阶段。 参与凝血全过程。
金融机构及其工作人员发现客户的交易金额、频率、流向、性质等有异常情形,经分析认为涉嫌洗钱的,应当提交什么报告?()