Re: SQL help

[rob@xxxxxxxxx]

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Keeping track of who did what when can be handled by a trigger program or
the journal.

Rob Berendt
--
"They that can give up essential liberty to obtain a little temporary
safety deserve neither liberty nor safety."
Benjamin Franklin




"Leif Svalgaard" <leif@attglobal.net>
Sent by: midrange-l-admin@midrange.com
04/27/2002 09:48 PM
Please respond to midrange-l


        To:     <midrange-l@midrange.com>
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        Subject:        Re: SQL help


From: Joe Pluta <joepluta@PlutaBrothers.com>
> > From: rob@dekko.com
> > Sooner or later some clod will update the data from outside the
> > one 5250 program you think is the only method to update the file.
>
> This is the big argument for referential integrity.  I disagree.
>
> People can only access your data if you let them.  You can avoid any
chance
> of this if your file access is done via a service program.  Any access
to a
> file requires a call to the appropriate service program.  Files are
> completely secured to a user profile whose authority is adopted by said
> program.

I agree. All access to all files of an application should be handled
by a service program. This allows not only referential integrity but
a host of other good things like keeping track of who did what when.


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