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Psudo colums
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Answer / mathan r
It is a column that is not an actual column in the table.
eg USER, UID, SYSDATE, ROWNUM, ROWID, NULL, AND LEVEL.
rowid
versions_xid
versions_operation
versions_startscn
versions_endscn
sysdate
systimestamp
rownum
ora_rowscn
object_value
level
user
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