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what happens when you insert/update/delete a row in a table - concepts

user12075620Oct 24 2013 — edited Oct 24 2013

I am trying to understand the below concepts with regards to internal concepts ( such as undo and redo)

1) what happens in the database when you insert a row in a table ?

2) what happens in the database when you update a row in a table?

3) what happens in the database when you delete a row a in the table??

I read the oracle documentation and got confused with the redo and undo behavior. It would you great if you someone explains the concept in a simple manner.  I am a novice programmer trying to understand the database concepts . Any help would be highly appreciated.
This post has been answered by Hemant K Chitale on Oct 24 2013
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Locked on Nov 21 2013
Added on Oct 24 2013
#database, #general-database-discussions
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