[AccessD] Autonumber Assigned Immediately

Dan Waters dwaters at usinternet.com
Thu Sep 8 14:30:37 CDT 2005


I will agree to agree with Rueben!

Each of the processes in my system uses the autonumber field to uniquely
identify a particular record.  Now everyone can refer to, "Corrective Action
number 378" or something similar.  The number is useful to people because it
refers permanently refers to one and only one process record.  Much like
paper forms that were pre-serialized for uniqueness.

Anything else I might do would be complex and add risk.

Dan Waters

-----Original Message-----
From: accessd-bounces at databaseadvisors.com
[mailto:accessd-bounces at databaseadvisors.com] On Behalf Of Reuben Cummings
Sent: Thursday, September 08, 2005 11:25 AM
To: Access Developers discussion and problem solving
Subject: Re: [AccessD] Autonumber Assigned Immediately

You're correct Charlotte, but I've also NEVER seen a case where autonumber
6, for example, changed which row of data it is connected to.  It always
ID's the same row for life.  I have never agreed to the statement that the
data is separate from the autonumber - they ARE in the same row.

IMO, the autonumber field is simply a way to create sequential numbering
without writing a bunch code to do so.  The fact that it can also be the
Primary Key is just an added benefit.  Why include two completely unique
numbers in a row if one will do two jobs?  I'm a big fan of simplicity.

This will lead to a ridiculous discussion - again - so I agree to disagree
;)

BTW, Charlotte, because I have never driven a nail with a screwdriver that
method of driving nails is, in fact, NOT a valid method.  :)  I'll let the
list know if I ever do.  However, an adjustable wrench is acceptable.

Reuben Cummings
GFC, LLC
812.523.1017


> -----Original Message-----
> From: accessd-bounces at databaseadvisors.com
> [mailto:accessd-bounces at databaseadvisors.com]On Behalf Of Charlotte
> Foust
> Sent: Thursday, September 08, 2005 11:04 AM
> To: Access Developers discussion and problem solving
> Subject: Re: [AccessD] Autonumber Assigned Immediately
>
>
> No, it is a row identifier and therefore always points to the same row,
> period.  The data in that row are entirely independent from the
> autonumber, which is what leads to all the intense discussions of
> "primay key" vs "unique key" vs "surrogate key", etc.  The fact that you
> have used it this way doesn't make it any more valid a usage.  After
> all, you can drive nails with a screwdriver too. ;->
>
> Charlotte Foust
>
>
> -----Original Message-----
> From: Reuben Cummings [mailto:reuben at gfconsultants.com]
> Sent: Thursday, September 08, 2005 8:46 AM
> To: Access Developers discussion and problem solving
> Subject: Re: [AccessD] Autonumber Assigned Immediately
>
>
> I don't know why everyone is so adamant about no showing an autonumber.
> I agree technically they shouldn't be shown.
>
> But sometimes a simple solution is the best.  For example, we currently
> have some contracts to 'digitize' a state required form for several
> local counties.  Our solution to digitize is merely enter the data into
> a DB we created.  However, the paper copies have to remain available.
> We number every form we put in so that the user can then search and find
> a paper copy by using the number generated by the software.
>
> Initially we did this using the autonumber and it worked perfectly (we
> had to abandon it to allow multiple entry persons for one county.
>
> It is a row identifier and therefore always points to the same set of
> data. If he wants to use it as an identifier let him.  I have.
>
> Reuben Cummings
> GFC, LLC
> 812.523.1017
>
>
> > -----Original Message-----
> > From: accessd-bounces at databaseadvisors.com
> > [mailto:accessd-bounces at databaseadvisors.com]On Behalf Of Charlotte
> > Foust
> > Sent: Thursday, September 08, 2005 10:31 AM
> > To: Access Developers discussion and problem solving
> > Subject: Re: [AccessD] Autonumber Assigned Immediately
> >
> >
> > That doesn't make sense.  If you have pull data in from other tables
> > and populated fields in a new record, the autonumber should have been
> > assigned, so there's something you aren't telling us.  And as someone
> > else pointed out, the user should NEVER see the autonumber.  It has no
>
> > meaning, it merely identifies a row, not the data in the row, and it
> > should not be treated as meaningful.
>
>
>
>
>
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