MOAC / "Org-Based" Security

Question

Hello,
I'm developing custom pl/sql for submitting concurrent requests/sets. For reference, here is what my initialization 'block' looks like in the pl/sql:
apps.fnd_global.apps_initialize(user_id, resp_id, app_id);
apps.mo_global.set_policy_context('M');
apps.mo_global.init(appShortName);
(or)
apps.fnd_global.apps_initialize(user_id, resp_id, app_id);
apps.mo_global.set_policy_context('S', org_id);
apps.mo_global.init(appShortName);
(depending on whether the user chooses a 'multi-org' context or 'single-org' context)
I just have a few general questions.
1) Is the "mo_global.set_policy_context" followed by "mo_global.init" proper form?
2) I understand that if you choose multi-org (set_policy_context('M')), it reads the 'fnd_global.apps_initialize'd user's "allowed orgs" from his profile options (I forget the exact ones at this moment). Is this correct?
3) Is the sole purpose of "multi-org" security for performing multiple operations on multiple orgs without having to switch responsibility?
4) Most importantly (saved this one for last), I'm reading about the various different kinds of security (namely, http://docs.oracle.com/cd/E14223_01/bia.796/e14219/security.htm#BGBIFAIG):
Operating Unit Org-Based security
Inventory Org-Based Security
Company Org-Based Security
Business Group Org-Based Security
HR Org-based Security
Payables Org-Based Security
Receivables Org-Based Security
SetID-Based Security
Position-Based Security
Ledger-Based Security
My question is, are all of these various "securities" all managed with organizations? In other words, will my code (above) enable users to use ANY of these different kinds of security, if they so choose?

Answer 1

Hey so seeing as this question hasn't really been answered yet I figure I'll give it another go.
I'm going to be very specific this time:
I run PL/SQL scripts against the EBS database in order to do things like schedule requests/request-sets. The first thing I do (always) is initialize the apps context:
apps.fnd_global.apps_initialize(u_id, r_id, a_id);
Next, depending on the situation (still unsure when/why, but whatever), we initialize the org context. This is done by performing exactly one of the following steps.
apps.mo_global.set_policy_context('M', null);
OR
apps.mo_global.set_policy_context('S', org_id);
OR
apps.mo_global.init('appname');
Now, the ORG_ID comes from this statement:
SELECT organization_id FROM apps.org_organization_definitions2 WHERE organization_name = 'blah'
Again, I don't know why/when we need to do this or apparently what any of these things do but it's kind of beyond the scope of what I do. SOMEBODY chooses one of these, depending on their mood (or whatever factors :) ). Based on my model, the following are the possibilities thus far:
apps.fnd_global.apps_initialize(u_id, r_id, a_id);
OR
apps.fnd_global.apps_initialize(u_id, r_id, a_id);
apps.mo_global.set_policy_context('M', null);
OR
apps.fnd_global.apps_initialize(u_id, r_id, a_id);
apps.mo_global.set_policy_context('S', org_id);
OR
apps.fnd_global.apps_initialize(u_id, r_id, a_id);
apps.mo_global.init('appname');
After this, I use
apps.fnd_submit.submit_program('appName','progName','STAGEXYZ', args); <-- however many times I need
apps.fnd_submit.set_request_set('appname','requestSetName');
OR
apps.fnd_request.submit_request('appName','progName','description',starttime,FALSE, args);
My question is twofold:
1) Is this model generic enough? In other words, without doing anything extra, will people be able to do pretty much everything you could think of, at least in terms of running concurrent requests / sets? Will I ever - EVER - need to chain "set_policy_context" with "init"? <-- I would really love a yes/no answer because I am in no way/shape/form an EBS expert. I've read all the docs that I've been presented with thus far but I haven't found a straight answer to this yet.
2) I understand there are all different kinds of "org-based" security. Could I use my current code to initialize an inv_org, for example? If not, where could I turn for help? Are there other tables I should use for inv_orgs, hr_orgs, etc?
THANKS! YOU ARE THE BEST!