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

[NewsArchive]

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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[NewsArchive]

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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[NewsArchive]

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