2. DUAL TABLE
The DUAL table has one row called "X" and one column called "DUMMY." The DUAL table is used to create SELECT statements and execute commands not directly related to a specific database table. Queries using the DUAL table return one row as a result.

48. Note
20 days added to the hire date

49. The results in Days

83. Equal values

85. 2. King, -1 Kochhar, 100 Vargas, 124 Zlotkey, .2
Statement will fail
King, -1 Kochhar, 100 Vargas, 124 Zlotkey, .2
King, -1 Kochhar, 100 Vargas, 124 Zlotkey, 100
King, null Kochhar, 100 Vargas, 124 Zlotkey, .2
Answer
2. King, Kochhar, Vargas, Zlotkey, .2

90. SEE YOU NEXT MEETING Raafat Rashad GOOD LUCK raafat_rashad@yahoo.co.uk