View the Exhibit and examine the attributes of an undo tablespace. In an OLTP system, the user SCOTT hasstarted a query on a large table in the peak transactional hour that performs bulk inserts. The query runs formore than 15 minutes and then SCOTT receives the following error:ORA-01555: snapshot too old What could be the reason for this error（）

A、 The query is unable to get a read-consistent image.

B、 There is not enough space in Flash Recovery Area.

C、 There is not enough free space in the flashback archive.

D、 The query is unable to place data blocks in undo tablespace

In which case would you use a FULL OUTER JOIN?（）

A、Both tables have NULL values.

B、You want all unmatched data from one table.

C、You want all matched data from both tables.

D、You want all unmatched data from both tables.

E、One of the tables has more data than the other.

F、You want all matched and unmatched data from only one table.

AutoCAD中，对象的阵列有哪几种方式（）。

A、环形

B、圆形

C、线形

D、矩形

在表单中为表格控件指定数据源的属性是（　　）。

A、DataSource

B、RecordSource

C、DataFrom

D、RecordFrom

You have performed the first step in placing your database into ARCHIVELOG mode. The second step is deciding whether the online redo log files are to be archived automatically or manually.  Which action should you take to enable archiving at instance startup？（）

A、 A

B、 B

C、 C

D、 D

Windows XP mode on a Windows 7 Professional machine fails to load. Which of the following isMOST likely the cause?（）

A、The machine does not have enough processor cores to allow for this feature.

B、Virtualization support is not enabled in the BIOS.

C、A license of Windows XP must be purchased in order to use Windows XP Mode.

D、The machine does not have enough RAM to allow for this feature.