Cobol - Re: Re: IBM Mainframe JCL Conversion Tools

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Re: Re: IBM Mainframe JCL Conversion Tools

Howard Brazee

2004-08-26, 8:55 pm

On 24-Aug-2004, james8049 <james8049.1bm5tr@mail.codecomments.com> wrote:

> In defense of JCL!
> For its time JCL was quite advanced:
> It give you device independence long before UNIX did. The target of a
> DD statement could be a printer, cardreader, disk file, tape drive, a
> collection of files. As long as it was readable for "OPEN INPUT" or
> writeable for "OPEN OUTPUT" and some basic record size and blocking
> matched your program did not care.

How do you compare JCL with what the other mainframe computer manufacturers
offered?

Let's pick a date - say 1980 and rank the various mainframe operating systems.
Or 1970.

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