Answer Posted / 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.

Explain how many work file we can code in jcl?

990

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Explain the like inverted list?

953

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Explain how to move cursor to a particular field when position is not known?

1002

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How to receive data passed through jcl parm parameter in a natural program? How data definition is defined in the program?

1084

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

932

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Explain how to ftp the natural program to desktop? (From mainframe to pc), is it possible?

1068

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

1010

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What happens when you issue a escape routine in a program? Will there be any compilation /run time erro?

1008

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The natural file converted to PDF file if Yes then explain ?

3152

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Explain how to receive data passed through jcl parm parameter in a natural program? How data definition is defined in the program?

1131

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Suppose 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?

1076

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How can we see the copy book length using file-aid?

958

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Can you explain control variable in online screens?

983

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Explain difference between read work file 1 and read work file once? Why we are using work file once?

968

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Can we see the copy book length using file-aid?

907

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