Model: Relation Instance

A relation instance is a connection between an outbound entity instance and an inbound entity instance. The relation instance has a type, the relation type. The relation type defines which entity type the outbound entity type and which entity type the inbound entity type must have.

Data Model

Graph

graph LR;
    A(Outbound Entity Instance)===>|"Relation Instance"|B(Inbound Entity Instance);

ER Diagram

erDiagram
    Entity-Type {
        string name
        string namespace
        string description
    }
    Entity-Instance {
        string id
        string label
        string description
    }
    Relation-Type {
        string name
        string instanceTypeName
        string namespace
        string description
    }
    Relation-Instance {
        string name
        string instanceTypeName
        string namespace
        string description
    }
    Property-Type {
        string name
        string description
        enum DataType
        enum SocketType
    }
    Property-Instance {
        string name
        JSON value
    }
    Entity-Instance ||--}o Property-Instance : stores
    Entity-Instance o{--}o Relation-Instance : outbound
    Entity-Instance o{--}o Relation-Instance : inbound
    Relation-Instance ||--}o Property-Instance : stores
    Relation-Instance o{--|| Relation-Type : is-a
    Property-Instance o{--|| Property-Type : is-a
    Entity-Instance o{--|| Entity-Type : is-a
    Entity-Type ||--}o Property-Type : defines
    Relation-Type ||--}o Property-Type : defines
    Entity-Type ||--}o Relation-Type : outbound
    Entity-Type ||--}o Relation-Type : inbound

GraphQL