Subscript Index
Means the number of occurrences of an array This means the number of displacement positions of an array.
Always declared in the working-storage section. It need not be declared inside the working-storage section.
It is initialized by the MOVE statement It is initialized by the SET operator.
It is comparatively slow to access It is faster than Subscript
Value is incremented using the ADD operator. Here, the value is incremented using the MOVE operator
Not necessary to declare INDEXED BY clauses. Necessary to declare INDEXED BY and any other clauses in Index.
BY Best Interview Question ON 06 May 2020