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What is pseudo columns in Oracle and what are their names?

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What is pseudo columns in Oracle and what are their names?
posted Oct 21, 2014 by Suchithra

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A pseudo column behaves like a table column, but is not actually stored in the table. You can select from pseudocolumns, but you cannot insert, update, or delete their values.

This section describes these pseudocolumns:     *CURRVAL, *NEXTVAL,  *LEVEL,  *ROWID, * ROWNUM
answer Oct 22, 2014 by Arun Gowda
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