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what is different between ROWNUM and ROWID in oracle?

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what is different between ROWNUM and ROWID in oracle?
posted Aug 20, 2014 by Rathi

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1 Answer

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ROWID

ROWID uniquely identifies where a row resides on disk. The information in a ROWID gives Oracle everything he needs to find your row, the disk number, the cylinder, block and offset into the block.

ROWNUM

The ROWNUM is a "pseudo-column", a placeholder that you can reference in SQL*Plus. The ROWNUM can be used to write specialized SQL and tune SQL.

answer Aug 20, 2014 by Sandeep Bedi
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