Difference
between ROWID and ROWNUM.
Row id
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RowNum
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1.Physical address of the rows.
2.Rowid is permanent
3.Rowid is 16-bit hexadecimal
4.Rowid gives address of rows or records
5. Rowid is automatically generated
unique id of a row and it is generated at the time of insertion of row.
6. ROWID is the fastest means of
accessing data.
7. They are unique identifiers for the
any row in a table.
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1. Rownum is the sequential number,
allocated to each returned row during query execution.
2. Rownum is temporary.
3.Rownum is numeric
4.Rownum gives count of records
5. Rownum is an dynamic value
automatically
retrieved along with select statement output.
6. It represents the sequential order in
which Oracle has retrieved the row.
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