RE: JDO vs JPA

["Kristen Henry" <klhnry@xxxxxxxxxxxx>]

I did a copy paste from some IBM documents... ultimately, yes, the Create
Schema (previously Collection) is what makes the AS/400 database that is
more classic in the SQL sense.

Thanks for the correction, and I don't see that as nonsense.

Kristen


-----Original Message-----
From: java400-l-bounces@xxxxxxxxxxxx [mailto:java400-l-bounces@xxxxxxxxxxxx]
On Behalf Of Charles Wilt
Sent: Friday, August 19, 2011 1:40 PM
To: Java Programming on and around the IBM i
Subject: Re: JDO vs JPA

Nonsense...

You can use transactions on files created in a library with DDS.  You
simply have to have manually created the journal and started
journalling on the files.  Optionally, you can set the library to
auto-journal new (and existing) files.

Lastly, note CREATE COLLECTION is non-standard and has been
depreciated for quite a while...CREATE SCHEMA is what you should be
using and the WITH DATA DICTIONARY is also depreciated.

Thus, basically the only difference, CREATE SCHEMA does in one step
what takes multiple steps (CRTLIB, CRTJRNRCV, CRTJRN and STRJRNLIB
commands) using the traditional method.

Charles

On Fri, Aug 19, 2011 at 3:05 PM, Kristen Henry <klhnry@xxxxxxxxxxxx> wrote:
> If the files on the AS/400 were created with DDS and a CRTLIB statement
then
> it is a Library and the files are not Transactional as collections unless
> they used commands to create a Data Dictionary (etc) which is not common.