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.

Answer / nilesh

External subroutine can access GDA used by invoking onject
where Subprograms are not.

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.

How do you pass GDA into a sub program with out PDA?

2 Answers   IBM,

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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

2 Answers   TCS,

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what type of files we use in file-aid

1 Answers   Tech Mahindra,

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How to find occurrence of mu and pe fields in a file?

0 Answers  

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can i see the copy book length using file-aid ?

2 Answers   TCS,

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Explain how are you going to remove duplicates from the file that is being read?

0 Answers  

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How to create 1 ddm that fetches 3 adabas files simultaneously?

0 Answers  

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how many work file we can code in jcl?

2 Answers  

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What is STACK in Natural? How we can use it in Program? Give me Eg.?

2 Answers   IBM,

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Explain the like inverted list?

0 Answers  

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What is cobol coding sheet?

0 Answers  

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Is it possible to code GOTO statement in NATURAL? if yes please provide the syntax of the same

1 Answers  

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