Vern,
Regarding Birgitta's comment about native I/O using SQE - I don't believe
that is the case -
It was Barbara Morris who told it and Scott Forstie confirmed.
For being able to implement RCAC (Row and Column Access Control - introduced
with 7.2) all data access to the database must be performed with the SQE.
There is an option SQE_NATIVE_ACCESS in the QAQQINI file which allows
non-SQL interfaces (such as Query/400 and OPNQRYF) being rerouted to the
CQE.
If SQE_NATIVE_ACCESS is set to *NO RCAC cannot be used.
I don't want to start a new discussion, because none of us is deeply
involved how it really works under the cover.
Mit freundlichen Grüßen / Best regards
Birgitta Hauser
"Shoot for the moon, even if you miss, you'll land among the stars." (Les
Brown)
"If you think education is expensive, try ignorance." (Derek Bok)
"What is worse than training your staff and losing them? Not training them
and keeping them!"
?Train people well enough so they can leave, treat them well enough so they
don't want to.? (Richard Branson)
-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of
Vernon Hamberg
Sent: Mittwoch, 18. Januar 2017 04:35
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx>
Subject: Re: Road Map to move a home grown application from RPG to DB2 SQL
or to any other data base platform
Regarding Birgitta's comment about native I/O using SQE - I don't believe
that is the case - both SQL and RPG make requests to the underlying DB
components, so far as I remember conversations I've had. I mean, if SQE were
used, there would not be the issue with FIELDPROC and encryption over key
fields.
On 1/17/2017 1:48 PM, Nathan Andelin wrote:
-snip-
BTW beginning with release 7.2. all data access including QUERY/400,
OPNQRYF, native I/O is executed with the SQL Query Engine.
In regards to QUERY/400 and OPNQRYF using the SQE, that's progress. I
remember the announcement.
In regards to native I/O using SQE, I'm not sure what you're referring to.
This is not what I'm sure about either - I would need to see the
announcement - the one I remember is that at 7.2 all QUERY requests were
using SQE.
Note that Vern's point, and my point pertain to PF and Indexes being
essentially identical. SQL Views and Materialized Query Tables
obviously don't have precise counterparts under DDS.
Just a side comment - PF and tables are the equivalents I mentioned - the
same MI object type code of x1901, as I recall.
Views and indexes are implemented as LFs - I've not done the DMPOBJ to find
the MI object type.
All of these are children of lower-level space objects - gotta love the
object-based nature of this our favorite system!
Cheers
Vern
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