====== 10.4 Logical Element / PIM to Implementation Artifact / PSM ======
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A Logical Element / [[dido:99_annexes:annex-b-terms-and-definitions:p:platform_independent_model|PIM]] traces to an Implementation Artifact / [[dido:99_annexes:annex-b-terms-and-definitions:p:platform_specific_model|PSM]] when an implementation profile maps the [[dido:99_annexes:annex-b-terms-and-definitions:p:platform_independent_model|Platform Independent Model (PIM)]] to selected technologies.

For example, a logical [[dido:99_annexes:annex-b-terms-and-definitions:c:communication_endpoint|Communication Endpoint]] may map to a DDS Topic in a DDS-based implementation profile. A logical [[dido:99_annexes:annex-b-terms-and-definitions:d:data_structure_definition|Data Structure Definition]] may map to an IDL structure. A logical [[dido:99_annexes:annex-b-terms-and-definitions:f:financial_node|Node]] may map to a Python process packaged as an OCI-compatible container image.

This mapping realizes the logical model for a selected implementation context. It does not redefine the logical element or the conceptual element behind it.

Examples include:

Table 10.4-1: Examples of logical elements traced to implementation artifacts

^ Logical Element / [[dido:99_annexes:annex-b-terms-and-definitions:p:platform_independent_model|PIM]] ^ Implementation Artifact / [[dido:99_annexes:annex-b-terms-and-definitions:p:platform_specific_model|PSM]] ^
| Logical Node | Python process, service process, or containerised executable |
| Logical [[dido:99_annexes:annex-b-terms-and-definitions:c:communication_endpoint|Communication Endpoint]] | DDS Topic, API endpoint, message queue, event stream, or file exchange point |
| Logical [[dido:99_annexes:annex-b-terms-and-definitions:d:data_structure_definition|Data Structure Definition]] | IDL structure, JSON Schema, XML Schema, SysML block, or generated language type |
| Logical [[dido:99_annexes:annex-b-terms-and-definitions:r:runtime_plane|Runtime Plane]] | DDS topic namespace, DDS partition, topic family, or implementation grouping |
| Logical [[dido:99_annexes:annex-b-terms-and-definitions:e:evidence|Evidence]] class | Test output, captured message, provenance record, audit record, or configured evidence package |
| Logical [[dido:99_annexes:annex-b-terms-and-definitions:t:traceability|Traceability]] relationship | Trace matrix entry, metadata link, configuration reference, model relationship, or generated report |


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