Common relationship properties - Learning Commons Docs

All relationships share a common set of properties. The relationshipType property differentiates between relationships for different entities. Check out the other schema reference pages for each entity’s supported relationships.

Property	Description	Type	Cardinality
`attributionStatement`	Textual credit that acknowledges the source or creator of a work, included when required by the content’s license (e.g., Creative Commons BY); specifies how the creator should be attributed in accordance with the license terms	`String`	1
`author`	Author of content	`String`	1
`ccssLCCount`	Number of `LearningComponent`s supporting the standard	`Integer`	1
`connectionType`	Specifies whether the strategy supports or improves the target factor	`String`	1
`dateCreated`	Date the item was created	`Date`	0..1
`dateModified`	Date the item was most recently modified	`Date`	0..1
`description`	Description of the item	`String`	1
`factorCategory`	Category of the target factor	`String`	0..1
`identifier`	Identifier of the item, either as textual strings or as URL (URI) links	`String`	1
`jaccard`	Proportion of shared LCs, calculated as the size of the intersection ÷ size of the union of LC sets; range: (0, 1]	`Float`	1
`license`	License document that applies to this content, typically indicated by URL	`String`	1
`provider`	Service provider, service operator, or service performer	`String`	1
`relationshipType`	Normalized value that defines the semantic meaning of the connection between the source and target entities (e.g., hasChild, supports, buildsTowards)	`String`	1
`sharedLCCount`	Number of `LearningComponent`s supporting both the state and standard	`Integer`	1
`sourceEntity`	Entity type from which the relationship originates (starting node in the connection)	`String`	1
`sourceEntityKey`	Source entity’s property that contains its unique identifier; used to locate and reference the entity in the dataset	`String`	1
`sourceEntityValue`	Identifier of the entity where the relationship originates; represents the starting point of the connection	`String`	1
`stateLCCount`	Number of `LearningComponent`s supporting the state standard	`Integer`	1
`targetEntity`	Entity type to which the relationship points (ending node in the connection)	`String`	1
`targetEntityKey`	Target entity’s property that contains its unique identifier; used to locate and reference the entity in the dataset	`String`	1
`targetEntityValue`	Identifier of the entity the relationship points to; represents the endpoint or destination of the connection	`String`	1

Example relationship between an Activity and StandardsFrameworkItem

{
  "type": "relationship",
  "identifier": "58de2d2a-34b2-512f-a14d-389b8840aa52",
  "label": "hasEducationalAlignment",
  "properties": {
    "license": "https://creativecommons.org/licenses/by/4.0/",
    "targetEntity": "StandardsFrameworkItem",
    "attributionStatement": "Knowledge Graph is provided by Learning Commons under the CC BY-4.0 license. Learning Commons received the scope and sequence of the Illustrative Mathematics 360 curriculum under CC BY-4.0 from Illustrative Mathematics.",
    "identifier": "58de2d2a-34b2-512f-a14d-389b8840aa52",
    "curriculumAlignmentType": "addressing",
    "provider": "Learning Commons",
    "sourceEntity": "Activity",
    "sourceEntityKey": "identifier",
    "alignmentType": "teaches",
    "author": "Illustrative Mathematics",
    "targetEntityKey": "caseIdentifierUUID",
    "relationshipType": "hasEducationalAlignment"
  },
  "source_identifier": "im:3c223476-a9f5-568d-8176-0ee31861723b",
  "source_labels": ["Activity"],
  "target_identifier": "827a633a-b88a-5ce9-8a7a-18369c547363",
  "target_labels": ["StandardsFrameworkItem"]
}

Schema reference overview

See entities and relationships grouped by dataset category.

Core concepts

Learn how entities, relationships, and UUIDs structure Knowledge Graph datasets.