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AVEVA™ Historian

_TagExtendedProperty

  • Last UpdatedMar 10, 2025
  • 1 minute read

Contains one entry for each property for a tag.

Column

Data Type

Description

(FK) TagName

nvarchar (256) NOT NULL

Specifies a tag name. TagName is a foreign key from the _Tag table.

(FK) PropertyNameKey

int NULL

A unique identifier for the extended property name. PropertyNameKey is a foreign key from the TagExtendedPropertyName table.

PropertyValue

sql_variant NOT NULL

The value of the tag extended property for this tag.

ChangeVersion

timestamp NOT NULL

Internal use only.

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