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A null value is created or represented by (a)A zero (b)A space (c)Entering a value (d)P

A null value is created or represented by (a)A zero (b)A space (c)Entering a value (d)P

   
A null value is created or represented by

(a)A zero
(b)A space
(c)Entering a value
(d)Pressing the ESC key
(e)Pressing the Enter key without making a prior entry of any kind.

Johnson 27-Dec-2017

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