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Conference vaxaxp::vmsnotes

Title:VAX and Alpha VMS
Notice:This is a new VMSnotes, please read note 2.1
Moderator:VAXAXP::BERNARDO
Created:Wed Jan 22 1997
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:703
Total number of notes:3722

198.0. "Datatrieve to decompress files ?" by SIOG::M_CRONIN () Mon Feb 17 1997 07:15

    Hi,
    
    A customer has files that were compressed by COBOL using CDD
    definitions. They want to be able to decompress them.
    
    What do you need to know about the file and how it was created in order
    to be be to do this ?
    
    They believe Datatrieve will do this. Is this the case ? Are there
    other alternatives ?
    
    Thanks in advance,
    
    Mary.
          
T.RTitleUserPersonal
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198.1QUARK::LIONELFree advice is worth every centMon Feb 17 1997 10:004
I think I'd start by asking in the ORAREP::NOMAHS::REPOSITORY (CDD) notesfile.
This doesn't really relate to the operating system.

				Steve
198.2AUSS::GARSONDECcharity Program OfficeMon Feb 17 1997 20:4122
    re .0
    
    My knowledge doesn't extend as far as knowing what you mean. Has the
    customer given the full picture?
    
    You need to find out what really compressed the files. Was it the
    LIBRARY command (or callable DCX?) in which case this conference is
    the right place? Is this some feature of COBOL in which case try the
    COBOL conference? Is this standard RMS compression in which case you
    don't need to do anything with the files although a judicious CONVERT
    could probably remove the compression?
    
>    What do you need to know about the file and how it was created in order
>    to be be to do this ?
    
    The customer should know this.
    
    Let's say that the customer has a file and they can't remember how it
    was created (e.g. staff turnover) and it doesn't seem to contain the
    data that they expect then it sounds as if we should be getting paid
    for sorting out the mess but I would start with DIR/FULL and
    DUMP/REC:COUNT:3 (or some other small number) for the file in question.