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Question :
what are phantom rows?

Posted by: sandeep on 10/20/2013

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Category Oracle Interview Questions
Rating (3.6) By 58 users
Added on 10/20/2013
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Answers:

If you have already read a range of data based upon a key value, another transaction inserts a new row which happens to have a value between this range. The original range which was referred to would now become invalid. This is because a ?Phantom row? was added.



Posted by: somen

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can u give an example????



Posted by: premangshu dey

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