Which statement is true regarding synonyms?（） Synonyms can be created only for a table 。 Synonyms are used to reference only those tables that are owned by another user 。 A public synonym and a private synonym can exist with the same name for the same table 。 The DROP SYNONYM statement removes the synonym, and the table on which the synonym has been created becomes invalid。
草坪管理：
What is the minimum amount of memory required for a new LPAR to be built via NIM on AIX 6.1？（） 128M。 256M。 512M。 1024M。
Which Scheduler view(s) can be queried to see which jobs are currently executing? （） DBA_SCHEDULER_JOB_RUN_DETAILS。 DBA_SCHEDULER_RUNNING_JOBS DBA。 DBA_SCHEDULER_CURRENT_JOBS。 DBA_SCHEDULER_JOBS DBA。 DBA_SCHEDULER_EXECUTING_JOBS。
建设单位不得明示施工单位租赁符合安全施工要求的安全防护用具、机械设备、施工机具及配件、消防设施和器材。
Which of the following Oracle features is enabled by setting a nonzero value for the MEMORY_TARGET initialization parameter？（）
