Class: Edge

A relation graph edge that connects two entities by a predicate. Note an edge is distinct from a statement, in that an axiom such as A SubClassOf R some B is represented as multiple statements, but is a single relation graph edge

URI: semsql_rg:Edge

classDiagram RelationGraphConstruct <|-- Edge Edge : object Edge : predicate Edge : subject

Usage

SELECT * FROM edge;

Inheritance

Slots

Name Cardinality and Range Description
subject 0..1
Node		 The subject of the statement
predicate 0..1
PropertyNode		 The predicate of the statement
object 0..1
Node		 Note the range of this slot is always a node

Usages

Comments

  • sqlview>> SELECT subject, predicate, object FROM owl_subclass_of_some_values_from UNION SELECT subject, predicate, object FROM rdfs_subclass_of_named_statement UNION SELECT subject, predicate, object FROM rdf_type_statement WHERE object IN (SELECT id FROM class_node)

Identifier and Mapping Information

Schema Source

  • from schema: https://w3id.org/semsql/relation_graph

SQL View

This class has a SQL view definition:

sqlview>>
  SELECT subject, predicate, object
  FROM owl_subclass_of_some_values_from
   UNION
  SELECT subject, predicate, object
  FROM rdfs_subclass_of_named_statement
   UNION
  SELECT subject, predicate, object
  FROM rdf_type_statement WHERE object IN (SELECT id FROM class_node)

Mappings

Mapping Type Mapped Value
self ['semsql_rg:Edge']
native ['semsql_rg:Edge']

LinkML Specification

Direct

name: edge
description: A relation graph edge that connects two entities by a predicate. Note
  an edge is distinct from a statement, in that an axiom such as A SubClassOf R some
  B is represented as multiple statements, but is a single relation graph edge
notes:
- this should hold direct edges. See also entailed_edge
comments:
- "sqlview>>\n  SELECT subject, predicate, object\n  FROM owl_subclass_of_some_values_from\n\
  \   UNION\n  SELECT subject, predicate, object\n  FROM rdfs_subclass_of_named_statement\n\
  \   UNION\n  SELECT subject, predicate, object\n  FROM rdf_type_statement WHERE\
  \ object IN (SELECT id FROM class_node)"
in_subset:
- base table
from_schema: https://w3id.org/semsql/relation_graph
rank: 1000
is_a: relation_graph_construct
slots:
- subject
- predicate
- object

Induced

name: edge
description: A relation graph edge that connects two entities by a predicate. Note
  an edge is distinct from a statement, in that an axiom such as A SubClassOf R some
  B is represented as multiple statements, but is a single relation graph edge
notes:
- this should hold direct edges. See also entailed_edge
comments:
- "sqlview>>\n  SELECT subject, predicate, object\n  FROM owl_subclass_of_some_values_from\n\
  \   UNION\n  SELECT subject, predicate, object\n  FROM rdfs_subclass_of_named_statement\n\
  \   UNION\n  SELECT subject, predicate, object\n  FROM rdf_type_statement WHERE\
  \ object IN (SELECT id FROM class_node)"
in_subset:
- base table
from_schema: https://w3id.org/semsql/relation_graph
rank: 1000
is_a: relation_graph_construct
attributes:
  subject:
    name: subject
    description: The subject of the statement
    from_schema: https://w3id.org/semsql/rdf
    aliases:
    - about
    - source
    - head
    rank: 1000
    slot_uri: rdf:subject
    alias: subject
    owner: edge
    domain_of:
    - term_association
    - owl_complex_axiom
    - owl_subclass_of_some_values_from
    - owl_equivalent_to_intersection_member
    - statements
    - relation_graph_construct
    - edge
    - subgraph_query
    - subgraph_edge_by_ancestor
    - subgraph_edge_by_descendant
    - subgraph_edge_by_parent
    - subgraph_edge_by_child
    - subgraph_edge_by_self
    - entailed_edge
    - entailed_edge_cycle
    - transitive_edge
    - repair_action
    - problem
    range: node
  predicate:
    name: predicate
    description: The predicate of the statement
    from_schema: https://w3id.org/semsql/rdf
    aliases:
    - relationship type
    - property
    rank: 1000
    slot_uri: rdf:predicate
    alias: predicate
    owner: edge
    domain_of:
    - term_association
    - owl_complex_axiom
    - owl_subclass_of_some_values_from
    - statements
    - relation_graph_construct
    - edge
    - subgraph_query
    - subgraph_edge_by_ancestor
    - subgraph_edge_by_descendant
    - subgraph_edge_by_parent
    - subgraph_edge_by_child
    - subgraph_edge_by_self
    - entailed_edge
    - entailed_edge_cycle
    - transitive_edge
    - problem
    range: property_node
  object:
    name: object
    description: Note the range of this slot is always a node. If the triple represents
      a literal, instead value will be populated
    from_schema: https://w3id.org/semsql/rdf
    aliases:
    - target
    - sink
    - tail
    rank: 1000
    slot_uri: rdf:object
    alias: object
    owner: edge
    domain_of:
    - term_association
    - owl_complex_axiom
    - owl_subclass_of_some_values_from
    - owl_equivalent_to_intersection_member
    - statements
    - relation_graph_construct
    - edge
    - subgraph_query
    - subgraph_edge_by_ancestor
    - subgraph_edge_by_descendant
    - subgraph_edge_by_parent
    - subgraph_edge_by_child
    - subgraph_edge_by_self
    - entailed_edge
    - entailed_edge_cycle
    - transitive_edge
    range: node