What is the difference between External subroutine and
subprogram?
Answers were Sorted based on User's Feedback
Answer / arya
An External Subroutine has got access to the Caller's GDA
where in the subprogram does not have.
The subprogram is like blackboxes as they are not aware of
the caller's environemnt. They take only the parameters and
process it and return the values. e.g. One natural
subprogram can be called through middle tiers like Entirex
and Vitria from a different environment(Lets say a dot net
or java developed web interface).However a similar
interface can not call a natural external subroutine.
As far as calling is concerned you use callnat for
subprogram and perform for external subroutine.
Is This Answer Correct ? | 32 Yes | 2 No |
Answer / nilesh
External subroutine can access GDA used by invoking onject
where Subprograms are not.
Is This Answer Correct ? | 6 Yes | 1 No |
Answer / karthik
I didnt use anytime external subroutines. I used
subprograms in many places , where we will define PDA.
using PDA , we can get and send the data. There might be
some difference in using GDA between external subroutine
and subprograms.
Is This Answer Correct ? | 5 Yes | 6 No |
what is the difference between read and find ?
Is it possible to declare a GDA for an external subroutine?
How can I create 1 DDM that fetches 3 ADABAS files simultaneously?
What is a hyperdescriptor? How does it work?
What is Natural?
Tell me what type of files we can process thru file-aid?
You are processing an input file in a Natural program and you want the program to fail if the file is empty. What command you use in Natural to force it to fail ?
What is the difference between External subroutine and subprogram?
difference between escape(top or bottom) and escape immediate(top or bottom?
Types Of Read , FIND
Explain the address converter?
How do you receive data passed through JCL parm parameter in a Natural program ? How Data definition is defined in the program?