试题详情
- 单项选择题What does the SCN represent？（）
A、 The system change number， which is a point in time relative to transactions within a given database.
B、 A number that represents time. Thus， at 1300 hours， the SCN is the same on all databases.
C、 The security change number， which represents the security code that is needed to access any database structure.
D、 A conversion factor that converts internal database time to external clock time.
E、 UTC time in the database，providing a standardized way of tracking time in Oracle.
- A
关注下方微信公众号，在线模考后查看
热门试题
- You execute&en
- Which statemen
- Evaluate the SQL sta
- Given: Whatistheres
- The EMPLOYEES table
- You need to calculat
- Which of
- Examine the&en
- In which
- One of t
- You are u
- On your Oracle Data
- Click the
- Which two are true a
- Indentify two advant
- 在非归档方式下操作的数据库禁用了（）。
- By mistake，&en
- 定义过程和定义函数的主要区别之一是，定义
- Which s
- Which object privile