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Thread: Do Delta-Patch installs also cover data files (TPS) or only EXE/DLL?

  1. #1

    Default Do Delta-Patch installs also cover data files (TPS) or only EXE/DLL?

    Hello Friedrich,

    when we started 25 years ago my first installs were sent out on 1 Diskette, my
    recent installer has grown to 130 MB.

    Setupbuilder can do Delta patches. I understand this like I tell SB "Look here,
    this is the original install. Now look there, thats the new one." Then SB does
    some magic math and creates an installer, then, when run on a target machine,
    changes / adds / replaces files This Delta-installer has just some few bits and
    bytes, just enough to turn the old to new.

    Right?

    And does it work on TPS also? Because our DB is the one which has grown over
    the years. But most tables with product data have only little changes, maybe in
    100 out of 1,000 records.

    Would those Delta-patching work here too, in the meaning of reducing the data
    size in tge update installer?

    And is it secure?


    Regards,
    Wolfgang Orth
    www.odata.de

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  2. #2

    Default Re: Do Delta-Patch installs also cover data files (TPS) or only EXE/DLL?

    Wolfgang,

    > And does it work on TPS also? Because our DB is the one which has grown over
    > the years. But most tables with product data have only little changes, maybe in
    > 100 out of 1,000 records.
    >
    > Would those Delta-patching work here too, in the meaning of reducing the data
    > size in tge update installer?

    Friedrich will correct me<g> but since TPS files are actually
    "updated" every time they're simply opened trying to update by bits
    and bytes might be asking too much.

    --
    Lee White

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  3. #3

    Default Re: Do Delta-Patch installs also cover data files (TPS) or only EXE/DLL?

    Hi Wolfgang,

    <EWLS> Exactly What Lee Said

    It must be ensured that the TPS update received by the end-user was created
    from exactly the *same* TPS files that he has installed, or the expansion
    will fail.

    BTW, compressed and/or encrypted files are very bad delta patch candidates.
    When such a file is updated, the size of the upgrade file could increase
    considerably. This is because two nearly identical files will usually
    appear radically different (in their 'byte level' binary footprint) once
    they are compressed.

    Friedrich

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