You can't do that

[Jeff Harrison]

--- Scott Brown <lordblue at msn.com> wrote:

> 
> >
> >John, you are lucky that you have not been exposed
> to
> >the garbage that I have seen :-)
> >
> >It also seems that you are getting lost with just
> this
> >one example.  My request was for rules for data
> >integrity.  This would just be one of the possible
> >rules.
> >
> >Example: I have seen many situations where the
> >programmer has allowed the deletion of a record
> such
> >as an an inventory record, when it is still
> referenced
> >in another file such as an order file. Ouch.
> >
> >Some other possible rules would be:
> >
> >Force certain field(s) to be unique.
> >Require a non-blank field.
> >Require the existence of a matching record in
> another
> >file.
> >Minimum/Maxium values for fields.
> >Math rules for field values. (Ex. Field must be an
> >even number)
> >Prevent any records from being deleted.
> >Require that if field A is filled in then field B
> not
> >be filled in.
> >
> >These are just a few of the possibilities that come
> to
> >mind.
> >
> >Jeff Harrison
> >jeffaharrison at yahoo.com
> 
> 
> I for one, would hope that FilePro would not put
> these kind of limitations 
> on their software. Most of what you mentioned should
> be taken care of by the 
> person writing the program. It's not FilePro's fault
> if some programmers 
> can't write good code.
> 
> Just my humble opinion,
> 
> Scott....
> 
> 

I'm not sure why you see this as a limitation.  The
original programmer would put these rules in place not
filepro.  It is just that filepro would attempt to
enforce these rules.

Yes, in a perfect world, programmer #1 would and
should be responsible for not violating his own data
integrity.  However, what is to stop programmer #2 (or
programmer #22 for that matter) from making a mess of
things?  There is no way for programmer #1 to  forsee
the way that programmer #2 will mess things up.

No, its not filepro's fault that some programmers do
not write good code.  Its also not my fault that a
second programmer came in and messed up my
application.

What is the down side of being able to make such
rules? 

Jeff Harrison
jeffaharrison at yahoo.com

Author of JHExport and JHImport.  The easiest and
fastest ways to generate code for filePro exports and imports.


		
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