Examine the structure of the EMPLOYEES table: EMPLOYEE_ID NUMBER Primary Key FIRST_NAME VARCHAR2(25) LAST_NAME VARCHAR2(25) HIRE_DATE DATE You issue these statements: CREATE table new_emp ( employe_id NUMBER, name VARCGAR2(30)); INSERT INTO new_emp SELECT employee_id, last_name from employees; Savepoint s1; UPDATE new_emp set name = UPPER(name); Savepoint s2; Delete from new_emp; Rollback to s2; Delete from new_emp where employee_id=180; UPDATE new_emp set name = 'James'; Rollback to s2; UPDATE new_emp sey name = 'James' Where employee_id=180; Rollback; At the end of this transaction, what is true? () You have no rows in the table.。 You have an employee with the name of James.。 You cannot roll back to the same savepoint more than once.。 Your last update fails to update any rows because employee ID 180 was already deleted.。
某水闸共10孔,每孔净宽10.0m。底板厚1.6m,闸室总宽112.8m,顺水流长16.Om;闸室及翼墙底板基础采用水泥土搅拌桩处理。其主要工程内容有:①地基与基础;②闸室段(土建);③上游连接段;④下游连接段;⑤消能防冲段;⑥交通桥(工作桥);⑦金属结构及启闭机安装;⑧启闭机房和桥头堡。施工过程中,发生如下事件:
事件1:水泥土搅拌桩在施工前进行了2根工艺性试验桩,确定了施工参数。
事件2:水泥土搅拌桩施工完成后,施工单位对基坑进行了开挖,按规范要求对水泥土搅拌桩进行了检测。检测合格后,施工单位组织项目法人、监理、设计、质量监督、运行管理等单位组成联合小组,共同检查核定其质量等级并填写签证表。
事件3:水闸闸墩施工正值高温季节,为此,施工单位采取了多项温控措施保证混凝土施工质量。
事件4:本工程共划分为1个单位工程。单位工程完成后,监理单位组织项目法人、设计、施工、运行管理、质量监督等单位组成外观质量评定小组,现场进行工程外观质量检验评定,并将评定结论报工程质量监督机构核备。
根据《水闸施工规范》(SL27―2014),事件3中应采取哪些温控措施保证混凝土高温季节施工质量?
You want to back up your 100-GB database on a remote tape device. You are required to ensure that minimum network bandwidth is consumed while transferring the backups to the tape device. The current consumption of your CPU is approximately 40 percent. Which type of backup should you perform?() standard backup set。 image copy。 compressed backup。 user-managed backu。
我国10kV电力系统()系统。 IT。 TT。 TN-C。 TV-S。
结合小企业的特征分析其在国民经济中的作用和地位。
与房地产价格成正相关关系的因素是()。