What is the difference between READ BY ISN and FIND
- 2 Answers
- 11910 Views
- I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
Answer / rashmi
Read By ISN:-
It reads the adabas file as per the ISN sequence. User
should know the ISN to fetch the record.
FIND:-
It finds the record from the adabas file as per the
descriptor value provided by the user. No need to know the
ISN value.
But both will provide output in ISN sequence.
| Is This Answer Correct ? | 9 Yes | 5 No |
Answer / kazim zaidi
Read by ISN i.e. Read Physical
File read in sequential order
you don't need to know the ISN
However, GET #ISN - you need to know ISN
Usually you read by Physical or by Descriptor, if the record meets certain criteria for update, record is read using GET followed by UPDATE (or DELETE).
FIND - Finds record based on the Descriptor value, if partial value given it creates a loop.
If you know the unique Descriptor value you can also code
FIND(1) filename ....
just to retrieve one record
| Is This Answer Correct ? | 1 Yes | 0 No |
Tell me can we update with histogram?
Does Natural online require CICS or other TP systems to function? How does Natural interact with CICS? Thanks.
Can we update with histogram?
Explain difference between read(1) and read work file once?
How can we see the copy book length using file-aid?
What happens when you issue a escape routine in a program? Will there be any compilation /run time erro?
control variable in online screens
What happens when you issue a ESCAPE ROUTINE in a program ? Will there be any compilation /Run time error.
Is it possible to code GOTO statement in NATURAL? if yes please provide the syntax of the same
Explain how to move cursor to a particular field when position is not known?
why do we use file-aid for seqential files?
Define cobol coding sheet?
COBOL 
