6.4.2.2 SourceVersion

6.4.2.2.1 Purpose¶

A version of an origin (sensor firmware, lab method, algorithm) or of a channel (a management-software release). Supplier versions we do not know stay unknown; our own algorithms and mappings always carry a real version.

6.4.2.2.2 Questions it answers¶

Which version of a sensor, method or software produced or delivered this data?
Is that version known?

6.4.2.2.3 Fields¶

Field	Type	Cardinality	Description
`id`	`string` (uuid)	`1..1`	Key.
`version`	`string`	`0..1`	Empty when externally unknown; our algorithms/mappings require a real version, never an invented supplier version.
`created_at`	`datetime`	`1..1`
`updated_at`	`datetime`	`1..1`

6.4.2.2.4 Subtypes¶

Discriminator type: every SourceVersion is exactly one of the subtypes below (disjoint and complete).

OriginVersion¶

Field	Type	Cardinality	Description
`source_origin`	SourceOrigin	`1..1`

ChannelVersion¶

Field	Type	Cardinality	Description
`source_channel`	SourceChannel	`1..1`

6.4.2.2.5 Relationships¶

References

OriginVersion.source_origin → SourceOrigin (1..1)
ChannelVersion.source_channel → SourceChannel (1..1)

Referenced by

SourceProducerEntity.origin_version (as OriginVersion) (1..1)
SourceProducerEntity.channel_version (as ChannelVersion) (0..1)

Subtypes

by type: OriginVersion, ChannelVersion

6.4.2.2.6 Rules & constraints¶

(subtype, origin or channel, version) is unique; at most one unknown-version entry per origin/channel.