Re: IBM i 7.3 Temporal tables

Yeah, I do believe that the database team works hard to get all wishes
addressed, but I would appreciate if there would be a little less kinda
"QSYS2.SERVICES_INFO" and more "business features".
I feel a little disappointed that four years later than the other DB2
flavors we just got half of the long awaited temporal feature.

Regards,
-Arco

2016-04-12 19:48 GMT+02:00 Matt Olson <Matt.Olson@xxxxxxxx>:

Z/OS and LUW get all the love much earlier (2012):


http://www.ibm.com/developerworks/data/library/techarticle/dm-1410temporal-tables-db2zos/index.html

-----Original Message-----
From: Arco Simonse [mailto:arco400@xxxxxxxxx]
Sent: Tuesday, April 12, 2016 12:21 PM
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx>
Subject: IBM i 7.3 Temporal tables

Today IBM announced IBM i 7.3.
Great enhancements are in it, there is also the great feature for temporal
tables, which is fulfilling long-cherished wishes of some of us.

For what is published yet on:

https://www.ibm.com/developerworks/community/wikis/home?lang=en#!/wiki/IBM%20i%20Technology%20Updates/page/IBM%20i%207.3%20-%20Base%20Enhancements

and in the new SQL Reference at:
https://www.ibm.com/support/knowledgecenter/ssw_ibm_i_73/db2/rbafzintro.htm
it looks like only system time temporal tables will be supported.

System time involves tracking when changes are made to the state of a
table, such as when an insurance policy is modified or a loan is created.
Business time involves tracking the effective dates of certain business
conditions, such as the terms of an insurance policy or the interest rate
of a loan. (Business time is sometimes referred to as valid time or
application time.) Indeed, some organizations need to track both types of
temporal data in one table; such tables would be considered bitemporal.

Granted that this system time support is at least a good start, many
businesses that are interested in the use of temporal tables would profit
most from the use of business time temporal tables and bitemporals, so that
for example you can do:

SELECT vin, rental_car, coverage_amt
FROM policy FOR BUSINESS_TIME AS OF '2012-06-20'
WHERE id = 1111;

Hopefully IBM will add these business time and bitemporal features soon in
subsequent database PTF's.

Regards,
-Arco
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