What is meant by Proactive, Retroactive and Simultaneous Update?

Submitted by: Administrator
Proactive Update:
The updates that are applied to database before it becomes effective in real world .
Retroactive Update:
The updates that are applied to database after it becomes effective in real world .
Simulatneous Update:
The updates that are applied to database at the same time when it becomes effective in real world .
Submitted by: Administrator

Read Online RDBMS Job Interview Questions And Answers