P1-REQ-13-4-008

Return to Part 1 Requirements

Statement

A Data Structure Instance SHALL identify a populated occurrence of a Data Structure Definition.

Source

Part 1, Section 13.4: Core Conceptual Element Requirements.

Rationale

A Data Structure Instance represents a populated occurrence of a Data Structure Definition. This distinction separates the definition of a class of information from a specific occurrence of information that conforms to that definition.

This requirement supports traceability between definitions and instances and prevents a populated occurrence from redefining the information class.

Applies To

This requirement applies to Data Structure Instance references within the Conceptual Architecture.

It applies specifically to:

Populated information occurrencesDefinition-to-instance relationshipsInstance interpretationInformation traceabilityData Structure Instance descriptions

Verification

Verification SHALL confirm that each Data Structure Instance identifies a populated occurrence of a Data Structure Definition.

Verification activities include review checks confirming that:

Data Structure Instances identify populated occurrencesEach Data Structure Instance relates to a Data Structure DefinitionData Structure Instances do not redefine Data Structure DefinitionsInstance references remain distinct from definition references

Traceability

Related source section:

Related requirement identifiers:

Status

Draft

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