POSC Specifications Version 2.2 Epicentre Logical Data Model

1225 Inadequate description of reserves

The current subtyping of RESERVES has proven to be insufficient. The subtypes of PROVED_RESERVES and UNPROVED_RESERVES do not apply universally, and the categories supplied cannot be used worldwide. Also, this structure does not allow local, specific qualification. Less specific subytping and categorization with more flexible classification is required.

Create reserves_class, reserves_classification and reserves_class_classification

Add entities to describe reserves classification -- reserves_calss as subtype of classification_class

Added objects:
reserves_class (Entity)
reserves_class.si (Unique rule)
reserves_classification.si (Unique rule)
reserves_classification (Entity)
reserves_class_classification (Entity)
reserves_class_classification.si (Unique rule)
reserves_class_classification.have_as_a_member (Attribute)
reserves_class_classification.reserves_class (Attribute)
reserves_classification.reserves (Attribute)
reserves_classification.reserves_class (Attribute)
reserves.reserves_category (Attribute)
reserves.reserves_classification (Attribute)

Move relationships from proved_reserves to reserves

The existing relationship to proved_reserves were moved to reserves prior to proved reserves being deleted.

Modified objects:
reserves.approved_by (Attribute)
reserves_category_change.original_reserves (Attribute)
reserves_category_change.result_reserves (Attribute)
reserves.amendment (Attribute)
reserves.approved_by (Attribute)
reserves.derived_from (Attribute)
RVR:_Reserves (Diagram)
business_associate.reserves_approved (Attribute)

Delete proved_reserves and unproved_reserves

The subtypes of reserves were deleted. Also deleted were the reference entities ref_proved_reserves_category and ref_unproved_reserves_category. The population of these two reference entities should be transferred to reserves_class.

Deleted objects:
proved_reserves (Entity)
unproved_reserves (Entity)
ref_proved_reserves_category (Entity)
ref_unproved_reserves_category (Entity)
business_associate.proved_reserves (Attribute)

Generalize the fluid pseudo component description

The description of fluid pseudo component did not include the ability to describe generic fluid components. The relationships to fluid_pseudo_component from reserves and reserves_category_change were deleted to allow this capability.

Deleted objects:
reserves.fluid_component (Attribute)
reserves_category_change.fluid_pseudo_component (Attribute)
reserves_category_change.fluid_pseudo_component (Attribute)
reserves.fluid_component (Attribute)
specific_fluid_component.reserves (Attribute)
specific_fluid_component.reserves_category_change (Attribute)
reserves_category_change.sri2 (Where rule)

Modify uniqueness rules for reserves and reserves_category_change

The uniqueness rules of reserves and reserves_category_change changed due to generalization of fluid components.

Modified objects:
reserves_category_change.si (Unique rule)
reserves.si (Unique rule)


Generated on Mon Dec 1 10:15:10 1997
© Copyright 1997 POSC. All rights reserved.