Interested to Buy Any Domain ? << Click Here >> for more details...
What is the difference between READ BY ISN and FIND
- 2 Answers
- 13123 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 |
What is a hyperdescriptor?
Which is more efficient - the external subroutine or a copycode coded in to a NATURAL program? And Why?
What is data trace system 2.0 used for?
How are you going to remove duplicates from the file that is being read?
Is it possible to declare a GDA for an external subroutine?
COuld you please let me know along with a sample on how are you going to remove duplicates from the file that is being read. Thanks Sam
How to create 1 ddm that fetches 3 adabas files simultaneously?
What is the difference between External subroutine and subprogram?
Explain the difference between external subroutine and subprogram?
Is it possible to code GOTO statement in NATURAL? if yes please provide the syntax of the same
what type of files we can process thru file-aid
A field declared as P8 needs to be redefined as Alphanumeric. What would be its new size?
COBOL 
