You execute the following piece of code with appropriate privileges: User SCOTT has been granted theCREATE SESSION privilege and the MGR role.Which two statements are true when a session logged in as SCOTT queries the SAL column in the viewand the table?（） Data is redacted for the EMP.SAL column only if the SCOTT session does not have the MGR role set.。 Data is redacted for EMP.SAL column only if the SCOTT session has the MGR role set.。 Data is never redacted for the EMP_V.SAL column.。 Data is redacted for the EMP_V.SAL column only if the SCOTT session has the MGR role set.。 Data is redacted for the EMP_V.SAL column only if the SCOTT session does not have the MGR role set.。
Given： When line 11 is reached， how many objects are eligible for garbage collection？（） 0。 1。 2。 3。
张某，在山上劳动时被毒蛇咬伤，下列哪项护理措施不妥（） 卧床休息。 严密观察病情变化。 抬高肢体。 创口持续湿敷。 中草药内服。
You are working on an Oracle Database 10g database. For which purposes would you use the Flashback Transaction Query feature？ （） To recover a dropped table.。 To recover a dropped schema.。 To recover data from a truncated table.。 To view changes made by all the transactions during a given period of time.。 To view changes made by a single transaction during a given period of time.。
简述固体表面的不均匀性
You need to change the text of a pop-up menu that appears when a user right clicks the mouse in the EMP_DATA data block. Where could you find the node for the pop-up menu in the Object Navigator?（）
