Re: Temporal database feature on IBM i?

Per these docs...(first one from IBM :)

Temporal enhancements are included in the SQL 2011 standards.
http://metadata-standards.org/Document-library/Documents-by-number/WG2-N1501-N1550/WG2_N1536_koa046-Temporal-features-in-SQL-standard.pdf
https://en.wikipedia.org/wiki/SQL:2011

Charles


On Sun, May 10, 2015 at 2:33 PM, Vernon Hamberg <vhamberg@xxxxxxxxxxxxxxx>
wrote:

> Matt
>
> A Google of "db2 temporal" got lots of hits - this one looks like a good
> start for LUW - others specifically said for Z, which is mainframe -
>
>
> http://www.ibm.com/developerworks/data/library/techarticle/dm-1210temporaltablesdb2/
>
> There are links there to free community editions of DB2 for LUW, and
> several other items.
>
> You didn't say why you're interested, so I'll ass-u-me some things.
>
> The IBM i DB2 team is not the LUW team - IBM do try to cross-pollinate
> some, there are documents about the similarity. But no guarantees that
> syntax in one flavor of DB2 will be the same in another flavor.
>
> If Scott and Mark ever do have their teams work on this, you just can't
> trust documentation for LUW or Z flavors to be exactly the same as you'll
> end up using on i. That is the case with several things - folks have posted
> questions in these lists about some feature they saw in DB2 documentation
> and it just isn't supported on i or not in exactly the same syntax.
>
> One thing I am pretty confident about - they will make things line up with
> the latest ANSI spec for SQL. I don't know if temporal operations were even
> part of that spec.
>
> Besides, some things just aren't needed on i that ARE needed on the other
> systems. There are settings and knobs in LUW DB2 for managing disk space
> that we never have to deal with.
>
> I know, since I was on the team testing it, that when the new query engine
> was being done, that the developers looked at some algorithms from the Z
> flavor - maybe from LUW, as well. But we can't make any assumptions about
> what the DB team will do on the i side of things.
>
> That's a lot of words to say, looking at other flavors may be a matter of
> going down the yellow brick road - and do NOT pay attention to the man
> behind the green curtain!!
>
> Regards
> Vern
>
>
> On 5/9/2015 4:19 PM, Matt Olson wrote:
>
>> Can you provide the reference for the LUW version of DB2 that has this
>> functionality?
>>
>>
>>
>> -----Original Message-----
>> From: Alan Campin [mailto:alan0307d@xxxxxxxxx]
>> Sent: Friday, May 08, 2015 1:17 PM
>> To: Midrange Systems Technical Discussion
>> Subject: Re: Temporal database feature on IBM i?
>>
>> As far as I know the i Series is not getting this capability. It is being
>> made available for Windows and Unix but not for the iSeries. Bummer.
>>
>> On Fri, May 8, 2015 at 9:34 AM, Matt Olson <Matt.Olson@xxxxxxxx> wrote:
>>
>>  Midrange users,
>>>
>>> SQL 2016 will be introducing a temporal database feature which appears
>>> to be journaling on steroids.
>>>
>>> Apparently oracle already has this feature.
>>>
>>> Just wondering what is the feature equivalent on DB2 for the i?
>>>
>>> Here are screenshots of the feature:
>>>
>>>
>>> http://i0.wp.com/blog.engineer-memo.com/wp-content/uploads/2015/05/ima
>>> ge59.png
>>>
>>>
>>> http://i1.wp.com/blog.engineer-memo.com/wp-content/uploads/2015/05/ima
>>> ge61.png
>>>
>>> You basically add a clause to your SQL that says "FOR SYSTEM_TIME AS
>>> OF 'date/time value'" at the end of your SQL and voila, you get a
>>> picture of your table(s) as of a particular point in time. No reading
>>> cryptic squished together fields in journals, just natural queryable
>>> data!
>>>
>>> Not only that you can "stretch" your database to the cloud, so all
>>> historical data is housed off site in presumably cheaper
>>> compute/storage infrastructure rather than your expensive on-premise
>>> database. Which makes sense for historical data since you are likely not
>>> looking at it very often.
>>> --
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>>
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