Re: Select Query on Table with no Primary Key

From: Michael Gentry (blacknex..mail.com)
Date: Wed Jun 06 2007 - 12:42:19 EDT

Next message: Fredrik Liden: "Remove Foreign Keys Mapped as Object Attributes"

Previous message: Michael Gentry: "Re: Select Query on Table with no Primary Key"
In reply to: Craig L Russell: "Re: Select Query on Table with no Primary Key"
Next in thread: Fredrik Liden: "Remove Foreign Keys Mapped as Object Attributes"
Reply: Fredrik Liden: "Remove Foreign Keys Mapped as Object Attributes"
Reply: Dave Merrin: "Re: Select Query on Table with no Primary Key"
Reply: Andrus Adamchik: "Re: Select Query on Table with no Primary Key"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

It's not a hijacking. It is interesting to point out that JPA does not
support tables without PKs -- I really should learn more about JPA soon. I
can understand why, too (need to know what to update and how to make joins,
etc). I'm kind of curious if Cayenne supports PK-less for read-only data
now, though. Seems to me that could be a useful thing.

/dev/mrg

On 6/6/07, Craig L Russell <Craig.Russel..un.com> wrote:
>
> I don't want to hijack this thread, but just point out that JPA does
> not support tables without primary key; JDO does (including updates)
> as an optional feature.
>
> Craig
>
>

Next message: Fredrik Liden: "Remove Foreign Keys Mapped as Object Attributes"
Previous message: Michael Gentry: "Re: Select Query on Table with no Primary Key"
In reply to: Craig L Russell: "Re: Select Query on Table with no Primary Key"
Next in thread: Fredrik Liden: "Remove Foreign Keys Mapped as Object Attributes"
Reply: Fredrik Liden: "Remove Foreign Keys Mapped as Object Attributes"
Reply: Dave Merrin: "Re: Select Query on Table with no Primary Key"
Reply: Andrus Adamchik: "Re: Select Query on Table with no Primary Key"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

This archive was generated by hypermail 2.0.0 : Wed Jun 06 2007 - 12:42:50 EDT