You want to move all the objects of the APPS user in the test database to the DB_USER schema of the production database. Which option of IMPDP would you use to accomplish this task？（） FULL。 SCHEMAS。 REMAP_SCHEMA。 REMAP_DATAFILES。 REMAP_TABLESPACE。
往复式空压机产生燃烧或爆炸事故是由于（）发生的。 易燃气体进入气缸。 易爆气体进入气缸。 在高温作用下。 润滑油形成的积碳。
A customer has a file server with RAID-5 using 8KB random I/Os， with 67% reads and 33% writes. How should the disk controller cache be configured for optimal performance？（） Use write-back cache。 Use write-back cache with battery backup。 Use write-through cache with disk caching enabled。 Use write-through cache with disk caching disabled。
The EMPLOYEE tables has these columns: LAST_NAME VARCHAR2(35) SALARY NUMBER(8,2) COMMISSION_PCT NUMBER(5,2) You want to display the name and annual salary multiplied by the commission_pct for all employees. For records that have a NULL commission_pct, a zero must be displayed against the calculated column. Which SQL statement displays the desired results? （） SELECT last_name, (salary * 12) * commission_pct FROM EMPLOYEES;。 SELECT last_name, (salary * 12) * IFNULL(commission_pct, 0) FROM EMPLOYEES;。 SELECT last_name, (salary * 12) * NVL2(commission_pct, 0) FROM EMPLOYEES;。 SELECT last_name, (salary * 12) * NVL(commission_pct, 0) FROM EMPLOYEES。
水利部负责监理工程师注册备案与管理工作，办事机构为建设与管理司。
What is a key ability of IBM Systems Director Enterprise Edition as compared to Standard Edition?（）
