Oracle認(rèn)證考試1Z0-031單項(xiàng)選擇題每日一練(2019.01.07)

單項(xiàng)選擇題
Which of the following choices identifies a database component that will be used for multiplexing control files?（）
A.V$CONTROLFILE
B.V$DATABASE
C.init.ora
D.DBA FILES
單項(xiàng)選擇題
You are designing the physical database layout on your host machine. What is the relationship between tablespaces and datafiles in the Oracle database?（）
A.One tablespace has only one datafile
B.Many tablespaces can share one datafile
C.One tablespace can have many datafiles
D.One datafile can contain many tablespaces
單項(xiàng)選擇題
You are identifying dictionary objects in the Oracle database. Which of the following is a view in the data dictionary?（）
A.V$DATABASE
B.DBA_TABLES
C.SYSAUD$
D.EMP
單項(xiàng)選擇題
A user issues a SELECT command against the Oracle database. Which of the following choices describes a step that Oracle will execute in support of this statement?（）
A.Acquire locks on table queried
B.Generate redo for statement
C.Fetch data from disk into memory
D.Write changes to disk
單項(xiàng)選擇題
Which of the following datatypes are used in situations where you want an ordered set of data elements, where every element is the same datatype, and where you predefine the number of elements that appear in the set?（）
A.REF
B.TABLE
C.CLOB
D.VARRAY

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