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$EntityStores

is a global variable that gives a list of all entity stores that are automatically accessed when Entity is used.

Details
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Examples  
Basic Examples  
Scope  
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$EntityStores

As of Version 11.3, $EntityStores has been superseded by the functions EntityRegister, EntityStores and EntityUnregister.

$EntityStores

is a global variable that gives a list of all entity stores that are automatically accessed when Entity is used.

Details

  • When evaluating an expression like Entity["type","name"][property], data is retrieved from the first EntityStore in $EntityStores that contains "type".
  • Entity types present in $EntityStores are considered before built-in entity types.
  • During assignments, Entity["type","name"][property]=value data is stored in the first EntityStore in $EntityStores that contains "type". If no EntityStore in $EntityStores contains "type", a new EntityStore is prepended to $EntityStores.

Examples

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Basic Examples  (1)

Add an entity store in which to look for entities of type "MyType":

Wolfram Language code: PrependTo[ $EntityStores, EntityStore["MyType" -> <| "Entities" -> <| "e1" -> <|"p1" -> 1, "p2" -> 2|>, "e2" -> <|"p1" -> 3, "p2" -> 4|> |> |>] ];

Scope  (2)

Set the value for a property of an entity:

Wolfram Language code: Entity["MyType1", "e"]["p"] = 1

This introduces a new EntityStore in $EntityStores:

Wolfram Language code: $EntityStores

Setting a value for an entity of a different type introduces another EntityStore in $EntityStores:

Wolfram Language code: Entity["MyType2", "f"]["q"] = 2; $EntityStores

Introduce an EntityStore containing two entity types:

Wolfram Language code: PrependTo[$EntityStores, EntityStore[{"MyType1", "MyType2"}]];

Values of assignments involving these types will be stored in this EntityStore:

Wolfram Language code: Entity["MyType1", "e"]["p"] = 1; Entity["MyType2", "f"]["q"] = 2; $EntityStores
Wolfram Research (2016), $EntityStores, Wolfram Language function, https://reference.wolfram.com/language/ref/$EntityStores.html.

Text

Wolfram Research (2016), $EntityStores, Wolfram Language function, https://reference.wolfram.com/language/ref/$EntityStores.html.

CMS

Wolfram Language. 2016. "$EntityStores." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/$EntityStores.html.

APA

Wolfram Language. (2016). $EntityStores. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/$EntityStores.html

BibTeX

@misc{reference.wolfram_2026_$entitystores, author="Wolfram Research", title="{$EntityStores}", year="2016", howpublished="\url{https://reference.wolfram.com/language/ref/$EntityStores.html}", note=[Accessed: 16-June-2026]}

BibLaTeX

@online{reference.wolfram_2026_$entitystores, organization={Wolfram Research}, title={$EntityStores}, year={2016}, url={https://reference.wolfram.com/language/ref/$EntityStores.html}, note=[Accessed: 16-June-2026]}