多项选择题
Exhibit：
View the Exhibit to see the data in the emp table.
You created a PRIMARY KEY constraint on the empno column of the emp table， and the constraint is not deferred. Which two statements are true in this scenario？ （）
A.No index would be created or used in this case.
B.A unique index on the empno column would be created.
C.A CHECK constraint would be enforced on the empno column.
D.A NOT NULL constraint would be enforced on the empno column.
E.A bitmap unique index would be created on the empno column.
相关考题
-
多项选择题
You are creating a locally managed tablespace to meet the following requirements： All the extents should be of the same size. The data should be spread across two data files. A bitmap should be used to record the free space within the allocated extents. Which three options would you choose？（）
A.set PCTFREE and PCTUSED to 50
B.specify extent allocation as Uniform
C.specify extent allocation as Automatic
D.create the tablespace as bigfile tablespace
E.create the tablespace as smallfile tablespace
F.set segment space management to Automatic
G.use the RESIZE clause while creating the tablespace -
单项选择题
Inyourdatabase，youdiscoveredthatatempfileinalocallymanagedtemporarytablespacehasbeendeletedattheoperatingsystemlevel.Howwouldyourecoverthetablespace？（）
A.flash back the database
B.perform point-in-time recovery
C.perform a full database recovery
D.drop and re-create the tablespace
E.use Recovery Manager （RMAN） to recover the database -
多项选择题
our database is in the MOUNT state and you execute the following command to open it： ALTER DATABASE OPEN What two actions are performed as a result of this command？（）
A.All control files are opened.
B.All redo log files are opened
C.The password file is opened.
D.The parameter file is opened.
E.All online data files are opened.
