Re: Temporal tables: Follow up questions

Rob,



Temporal tables are a feature that I find very interesting. Do you
have/know any particular link (beyond the SQL reference manual) that could
help me start in the right direction?


Thanks in advance,

Luis


P.S.: The reference to the S/36 guy would be a lot funnier if, sadly, were
not so commonly true…

On Mon, May 15, 2017 at 10:18 AM Rob Berendt <rob@xxxxxxxxx> wrote:

I recently gave a presentation to our local user group on Temporal

Tables.

Basically I took an existing Infor table, added columns necessary for
temporal tables, and did it all without recompiling any of their
applications.

Some of the follow up questions they asked were really good. Such as:

- What indexing strategies should be used on the history tables?
- Can you specify that the history table be in a different ASP?

Of course, the guy who still codes in S/36 RPG was wondering if an RPG
CHAIN would work.
And I did have to explain that you had to use temporal clauses like AS OF
and that just doing it in your where clause would not work.

I showed them how to query syspartitionstat to estimate I/O's that might
be hitting history.
And how to query syslimits to find the number of rows a single
partition(member) can hold.
A discussion of DB2 Multisystem ensued.


Rob Berendt
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Luis Rodriguez
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