Nombres de campo de ESRI?

Un archivo de forma que recuperé del sitio de Redistribución de Distritos de Pennsylvania contiene nombres de campo como TAPERSONS, TA1RACE. TAWHITEALN. TABLACKALN...oVAPERSONS, VA1RAC, VAWHITEALN...

Algunos forenses en línea sugieren que se trata de algún tipo de nombre de campo proporcionado por ESRI. Sin embargo, no puedo encontrar un modelo de datos o libro de códigos que describa las definiciones de campo. Prefiero no tratar de adivinar lo que significan, aunque los nombres sugieren datos demográficos.

¿Alguien puede señalarme un lugar donde pueda encontrar las definiciones?

Sus nombres de campo parecen estar vinculados a los datos del CENSO (muy similar a este archivo )

La respuesta de @Map_man lo llevará a la fuente de sus datos, para estar seguro.

Vea aquí algunos metadatos que parecen encajar: https://www.arcgis.com/sharing/rest/content/items/ba931cd7a8f341ed9486a41c6f6798d4/info/metadata/metadata.xml?format=default&output=html

Attribute Label: ID
Attribute Definition: Unique identifying number for each record.

Attribute Label: STFID
Attribute Definition: Federal Information Processing Standard (FIPS) code. State + County + Tract + Block number

Attribute Label: BLKGRP
Attribute Definition: Block group number.

Attribute Label: TAPERSONS
Attribute Definition: Total 2000 population for a block group.

Attribute Label: TA1RACE
Attribute Definition: Total number of people identifying themselves as being only one race.

Attribute Label: TAWHITE
Attribute Definition: Number of people identified as only White.

Attribute Label: TABLACK
Attribute Definition: Number of people identified as only Black.

Attribute Label: TAAMERIND
Attribute Definition: Number of people identified as only American Indian, Eskimo, or Aleut.

Attribute Label: TAASIAN
Attribute Definition: Number of people identified as only Asian.

Attribute Label: TAHAWPAC
Attribute Definition: Number of people identified as only Hawaiian/Pacific Islander.

Attribute Label: TA1OTHER
Attribute Definition: Number of people identified as belonging to a race other than white, black, American Indian, or Asian.

Attribute Label: TA2MRACE
Attribute Definition: Number of people identified as belonging to more than one race.

Attribute Label: TA2RACES
Attribute Definition: Number of people identified as belonging to two races.

Attribute Label: TA3RACES
Attribute Definition: Number of people identified as belonging to three races.

Attribute Label: TA5RACES
Attribute Definition: Number of people identified as belonging to five races.

Attribute Label: TA6RACES
Attribute Definition: Number of people identified as belonging to six races.

Attribute Label: TNTOTAL
Attribute Definition: Total 2000 population for a block group.

Attribute Label: TNHISPANIC
Attribute Definition: Number of people identifying themselves as Hispanic.

Attribute Label: TNNONHISP
Attribute Definition: Number of people identifying themselves as Non-Hispanic.

Attribute Label: TN1RACE
Attribute Definition: Number of Non-Hispanic people identified as belonging to one race.

Attribute Label: TNWHITE
Attribute Definition: Number of Non-Hispanic people identified as being White.

Attribute Label: TNBLACK
Attribute Definition: Number of non-hispanic people identified as being Black.

Attribute Label: TNAMINAKN
Attribute Definition: Number of non-hispanic people identified as being American Indian, Eskimo, or Aleut.

Attribute Label: TNASIAN
Attribute Definition: Number of Non-Hispanic people identified as being Asian.

Attribute Label: TNHAWOP
Attribute Definition: Number of non-hispanic people identified as being Hawaiian or Pacific Islander.

Attribute Label: TNOTHER
Attribute Definition: Number of non-hispanic people identified as being White, Black, American Indian, or Asian.

Attribute Label: TN2MRACE
Attribute Definition: Number of Non-Hispanic people identified as belonging to 2 or more races.

Attribute Label: TN2RACES
Attribute Definition: Number of Non-Hispanic people identified as belonging to 2 races.

Attribute Label: TN3RACES
Attribute Definition: Number of Non-Hispanic people identified as belonging to 3 races.

Attribute Label: TN4RACES
Attribute Definition: Number of Non-Hispanic people identified as belonging to 4 races.

Attribute Label: TN5RACES
Attribute Definition: Number of Non-Hispanic people identified as belonging to 5 races.

Attribute Label: TN6RACES
Attribute Definition: Number of Non-Hispanic people identified as belonging to 6 races.

Attribute Label: ALLAFAM
Attribute Definition: Number of people identifying themselves as being of African American descent.

Attribute Label: ALLAMIND
Attribute Definition: Number of people identifying themselves as being of American Indian descent.

Attribute Label: ALLASIAN
Attribute Definition: Number of people identifying themselves as being of Non-Hispanic descent.

Esri proporciona pautas sobre convenciones de nomenclatura, pero no el contenido de los nombres en sí. Por ejemplo, los archivos de forma tienen un límite de 10 caracteres, los nombres de archivo de imagen ráster tienen un límite de 13 caracteres, ninguno debe tener espacios ...

Es probable que su respuesta no provenga de un sitio de Esri. Debe profundizar en el conjunto de datos y contactar a los propietarios originales para obtener sus metadatos, para obtener una respuesta exacta. Por lo general, documentos como este vienen con un archivo README.txt.

Esri tiene el Modelo de información del gobierno local (LGIM) que ofrece algunas recomendaciones para nombrar objetos comunes. Eso podría dar un poco de orientación, pero de nuevo: el propietario del conjunto de datos podría haber hecho sus propias reglas internas.