Examine the structure of the EMPLOYEES table: You need to create an index called NAME_IDX on the first name and last name fields of the EMPLOYEES table. Which SQL statement would you use to perform this task?（） CREATE INDEX NAME_IDX (first_name, last_name);。 CREATE INDEX NAME_IDX (first_name AND last_name);。 CREATE INDEX NAME_IDX ON (first_name, last_name);。 CREATE INDEX NAME_IDX ON employees (first_name AND last_name);。 CREATE INDEX NAME_IDX ON employees(first_name, last_name);。 CREATE INDEX NAME_IDX FOR employees(first_name, last_name)。
初运转时的液面、压力、温度等的操作控制哪种是正确的：（） 从起动时用自动方式运转。 从起动时用手调节，五分钟转换自动。 起动时用手调节液面、压力、温度等在固定点附近，稳定了就转换自动。
按照《水利工程建设监理工程师注册管理办法》，未取得继续教育合格证书的，不予监理工程师注册。
What does the SCN represent?（） The system change number, which is a point in time relative to transactions within a given database. 。 A number that represents time. Thus, at 1300 hours, the SCN is the same on all databases. 。 The security change number, which represents the security code that is needed to access any database structure.。 A conversion factor that converts internal database time to external clock time. 。 UTC time in the database, providing a standardized way of tracking time in Oracle.&e。
病毒的主要结构成分和繁殖过程？
Following a server crash, the automatic recovery of InnoDB fails. How would you begin to manually repair the InnoDB tables?（）
