It seems that it is being asked to explain string function.Following are some string functions used in datastage: Compare,Field,Convert,Padstring,TrimB,TrimF,TrimLeadingTrailing Some string conversion functions : StringToDate,StringToDecimal,StringToTime,StaringToUstring,StringToTimestamp etc...
Read the String functions in DS
Functions like [] -> sub-string function and ':' -> concatenation operator
Syntax: string [ [ start, ] length ]
string [ delimiter, instance, repeats ]
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