单选题

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.

正确答案

来源:www.examk.com

答案解析

相似试题
  • What does the SCN represent?()

    单选题查看答案

  • What does the term application partitioning refer to?()

    单选题查看答案

  • What does it mean if a backup is expired?()

    单选题查看答案

  • What information does the report schema command not provide?() 

    多选题查看答案

  • What does it mean if a backup is expired?()  

    单选题查看答案

  • What does the DB_FLASHBACK_RETENTION_TARGET parameter configure?()  

    单选题查看答案

  • What does the Character Set Scanner command line utility do?()

    单选题查看答案

  • What does the FIND_MENU_ITEM built-in function return?()

    单选题查看答案

  • What does the Metadata Application Programming Interface (API) allow you to do?()

    单选题查看答案