問題文
An administrator is documenting the layout of a container database that hosts the order entry system of a retail chain. Which statement correctly describes what the CDB root holds?
選択肢
- The root keeps only the seed template copied by new tenants and hands the control files plus the redo logs to whichever tenant is currently open.
- The root keeps the application tables belonging to every tenant and holds one undo tablespace per tenant inside its own namespace.
- The root keeps a private data dictionary for each tenant and owns a separate redo log group for every container placed inside it.
- The root keeps the Oracle supplied metadata together with the common users and owns the control files plus the redo logs shared by every tenant in the whole container.