RE: Wen to use resource instead of simple assignment

["Barker, Sean (UK)" <sean.barker@baesystems.com>]

Lothar,

	Well, your suggestion is theoretically possible, given the right
reference data - it depends what you want to achieve. There are several
reasons for using the resource approach:

1) To quantify the resource usage;
2) To provide a functional specification of resource usage;
3) To define an effectivity of a resource usage - given the mess that is
effectivity, we should only make that mess in one place;
4) To link resource usage to resource management;
5) To have a way of linking resource requirement to actual resource
usage.

Since these are fairly major requirements for the support domain, PLCS
will use the resource model. Consequently, not using the resource model
will either create stovepipe solutions - in which case the aim of AP
interoperability is ignored - or require translators to work with both
approaches, and so increate then cost of translators and their
verification.

My guess is that the approach you suggest would probably result sooner
or later in the AP being sidelined for niche applications, and either a
new version being created using Resource, or a new AP being produced
with broader scope, but including Resource.

Sean Barker
0117 302 8184

-----Original Message-----
From: Lothar Klein [mailto:lothar.klein@lksoft.com]
Sent: 15 June 2006 09:10
To: Barker, Sean (UK)
Cc: Eva Miliuniene; Thomas E Hendrix; Tomas Baltramaitis
Subject: Wen to use resource instead of simple assignment

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Sean,

Maybe you can give us some input on a particular problem.

We have tasks_methods and various task_elements and need to assign
several kinds of items to these task (e.g. consumables, machines, human
resources etc.). The big question is whether we have to go through the
resource pipeline (Required_resource_assignment,
Required_resource_by_resource_item, Resource_item) and only then end on
the items of interest or if we can simply use Task_element_assignment,
Task_method_assignment, or Task_method_version_assignment and assign the
needed items directly in a particular role. What is in your opinion the
key point whether to make something a resource and go the complicated
path instead of having the simple assignment?
Note that AP214 UOF Process_plan is using the direct way.

Lothar

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// Lothar Klein, LKSoftWare GmbH
// Steinweg 1, 36093 Kuenzell, Germany
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