ACCESS FEED: RE: [MS_AccessPros] How do I prevent duplication of records?

Rabu, 27 Maret 2013

RE: [MS_AccessPros] How do I prevent duplication of records?

Hi Robin

You're welcome!

Of course, you can also make this composite key your primary key, as Rod
suggested, but I somehow assumed your table already had a primary key.

Cheers,
Graham

>
> From: MS_Access_Professionals@yahoogroups.com
[mailto:MS_Access_Professionals@yahoogroups.com] On Behalf Of Robin Chapple
> Sent: Wednesday, 27 March 2013 23:34
> To: MS_Access_Professionals@yahoogroups.com
> Subject: RE: [MS_AccessPros] How do I prevent duplication of records?
>
>
> Thanks Graham,
>
> I had an 'inkling' that a process such as you describe was possible.
> I will test it tomorrow.
>
> Cheers,
> Robin
>
> At 27/03/2013 08:40 PM, you wrote:
> >Hi Robin
> >
> >You need to create a composite index comprising the three fields.
> >
> >In table design view, click the Indexes button to show the floating
Indexes
> >window.
> >
> >In the left column (Index Name) of the first blank row, type a name, such
> >"Member_Year_Post", and in the second column (Field Name) select
MemberID.
> >
> >In the properties below, change Unique to "Yes".
> >
> >In the next two rows, select YearID and PostID for Field Name (leave
Index
> >Name blank).
> >
> >You will now have an index which will disallow two records with the same
> >combination of these three fields.
> >
> >Cheers,
> >Graham
> >
> > > To: MS_Access_Professionals@yahoogroups.com
> > > From: robinski@mymail.net.au
> > > Date: Wed, 27 Mar 2013 11:52:53 +1100
> > > Subject: [MS_AccessPros] How do I prevent duplication of records?
> > >
> > > I have a table which includes the fields: "MemberID" and "YearID" and
> >"PostID".
> > >
> > > How do I prevent duplication of the combination of the three fields
> > > berceuse data entry is not by Access form?
> > >
> > > Data entry is on a remote server by ASP pages.
> > >
> > > Many Thanks.
> > >
> > > Robin Chapple