The human resources department requested an employee report to high light those employees who are due for 30 days 6 months and 1 year evaluation. The higher_data field should display blue text for 30 days employee, a red text for 6 months employees and a green text for one year employees. You created a format trigger on the higher_data field to handle this task. What will happen if the format trigger returns a false value? （） The report execution will be halted. 。 The higher_data file will not be displayed. 。 The record will not be displayed. 。 Nothing will happen.。
猜动物的叫声（２岁前）属于婴儿游戏中的（） 活动性游戏。 智力游戏。 感官游戏。 发展语言的游戏。
You are working on a 24x7 （available 24 hours per day， 7 days per week） production database. An operating system （OS） user deletes the alert log file accidentally. Which statement in this scenario is true？（） The database crashes.。 The DBA needs to re-create the file.。 The file gets re-created automatically.。 The file gets restored automatically from the last backup.。 The DBA needs to perform a complete database recovery.。 The DBA needs to perform an incomplete database recovery.。
大体积混凝土常用的外加剂是（）。 减水剂。 早强剂。 缓凝剂。 速凝剂。
Which regular expression， inserted at line 12， correctly splits test into "Test A"， "Test B"， and "Test C"？（） String regex = ""；。 String regex = " "；。 String regex = ".*"；。 String regex = "\\s"；。 String regex = "\\.\\s*"；。 String regex = "\\w[\.] +"；。
From the V$SESSION_LONGOPS view， you find that some of the database users have long-running queries that consume a lot of CPU time. This causes performance problems for other users in the database， who have much shorter queries. You would like to make sure that the users with large queries do not use all the CPU time， but you still do not want to terminate them with an error message. Which method would you follow to achieve this？（）
