单项选择题

When importing a table into a database，the import process performs these tasks：
1. Triggers are imported.
2. Data is imported.
3. New tables are created.
4. Indexes are built.
5. Any bitmap， functional， and/or domain indexes are built.
6. Integrity constraints are enabled on the new tables.
Which option shows the tasks in the order in which they are performed？（）

A.2，3，4，1，6，5
B.3，2，4，1，6，5
C.3，2，6，4，1，5
D.4，2，3，1，5，6

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多项选择题

The database is running in NOARCHIVELOG mode. A data file is lost. Which two are valid options for recover？（）

A.Restore the data file and perform incomplete recovery.
B.Restore the data file and perform point-in-time recover.
C.Drop the tablespace and lose all data in the tablespace.
D.Restore the database and lose all data since the last backup.

单项选择题

You received these error messages because the client cannot find the desired database：
ORA-12198： TNS：could not path to destination
ORA-12203： TNS：unable to connect to destination
Which action would be appropriate in helping to resolve the errors？（）

A.A
B.B
C.C

单项选择题

Oracle Net Services is composed of several communication layers， known as a stack，which enables clients and database severs to share，modify，and manipulate data. Which reveals the correct architecture，in hierarchical order，of the client-side stack？（）

A.A
B.B
C.C
D.D