
/* Code Fragment 6.13 Bob was assigned the position of Associate Director of the Computer center for 1997. */

INSERT INCUMBENTS
SELECT '111-22-3333','999071', '1997-01-01', '1998-01-01'
FROM DUAL
WHERE EXISTS (	SELECT *
		FROM INCUMBENTS AS I2
		WHERE I2.SSN = '111-22-3333'
		AND I2.START_DATE < '1998-01-01'
		AND I2.END_DATE > '1997-01-01')
