Multiple choice technology databases What is the picture clause of the null indicator variable S9 (4) COMP-3 S9 (4) 9 (4) S9 (4) COMP Reveal answer Fill a bubble to check yourself D Correct answer Explanation In COBOL-DB2 programming, a null indicator variable must be declared as a 16-bit signed integer. The picture clause S9(4) COMP (or S9(4) BINARY) defines a 2-byte binary integer, which is the standard format for null indicators.