mermaid

classDiagram
  ProsoulModel <|-- QualityModel
  ProsoulModel <|-- Goal
  ProsoulModel <|-- Attribute
  ProsoulModel <|-- Metric
  ProsoulModel <|-- Factoid
  ProsoulModel <|-- MetricData
  ProsoulModel <|-- DataSourceType
  MetricData "1" -- "*" Metric : data (metric)
  DataSourceType "1" -- "*" Metric : data_source_type (metric)
  DataSourceType "1" -- "*" Factoid : data_source_type (factoid)
  Metric "*" -- "*" Attribute : metrics (attribute)
  Factoid "*" -- "*" Attribute : factoids (attribute)
  Attribute "*" -- "*" Goal : attributes (goal)
  Goal "*" -- "*" QualityModel : goals (quality model)
  ProsoulModel : active : Boolean Field
  ProsoulModel : created_at : DateTimeField
  ProsoulModel : description : CharField
  ProsoulModel : updated_at : DateTimeField
  ProsoulModel : created_by : ForeignKey
  Attribute : name : CharField
  Attribute : factoids : ManyToManyField
  Attribute : metrics : ManyToManyField
	DataSourceType : name : CharField
  Factoid : name : CharField
  Factoid : data_source_type : ForeignKey
  Goal : name : CharField
  Goal : attributes	: ManyToManyField
  Metric : name : CharField
  Metric : thresholds : CharField
  Metric : reverse_thresholds : BooleanField
  Metric : calculation_type : CharField
  Metric : data : ForeignKey
  Metric : data_source_type : ForeignKey
  MetricData : implementation : CharField
  MetricData : params : CharField
  QualityModel : name : CharField
  QualityModel : goals : ManyToManyField
  One <|-- Two : abstract inheritence