Interested to Buy Any Domain ? << Click Here >> for more details...
What is the difference between READ BY ISN and FIND
- 2 Answers
- 13257 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 |
difference between fetch , call and callnat
Explain how to find occurrence of mu and pe fields in a file?
what type of files we use in file-aid
Which is more efficient - the external subroutine or a copycode coded in to a NATURAL program? And Why?
Explain the address converter?
What is data trace system 2.0 used for?
Explain difference between escape(top or bottom) and escape immediate(top or bottom?
can i see the copy book length using file-aid ?
What is a hyperdescriptor?
What is cobol coding sheet?
Explain the data storage?
How do you pass GDA into a sub program with out PDA?
COBOL 
