23 lines
1.5 KiB
Markdown
23 lines
1.5 KiB
Markdown
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## LOCATION_HISTORY
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The LOCATION HISTORY table stores relationships between Persons or Care Sites and geographic locations over time.
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Field|Required|Type|Description
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:------------------------------|:--------|:------------|:----------------------------------------------
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|location_id |Yes|integer|A foreign key to the location table.|
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|relationship_type_concept_id |No|varchar(50)|The type of relationship between location and entity.|
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|domain_id |Yes|varchar(50)|The domain of the entity that is related to the location. Either PERSON, PROVIDER, or CARE_SITE.|
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|entity_id |Yes|integer|The unique identifier for the entity. References either person_id, provider_id, or care_site_id, depending on domain_id.|
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|start_date |Yes|date|The date the relationship started.|
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|end_date |No|date|The date the relationship ended.|
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### Conventions
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No.|Convention Description
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:--------|:------------------------------------
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| 1 | The entities (and permissible domains) with related locations are: Persons (PERSON), Providers (PROVIDER), and Care Sites (CARE_SITE). |
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| 2 | DOMAIN_ID specifies which table the ENTITY_ID refers to |
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| 3 | Locations and entities are static. Relationships between locations and entities are dynamic. |
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| 4 | When the domain is PERSON, the permissible values of relationship_type are: 'residence', 'work site', 'school'. |
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| 5 | When the domain is CARE_SITE, the value of relationship_type is NULL. |
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| 6 | When the domain is PROVIDER, the value of relationship_type is 'office'. |
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