' hide the spot hide circle entity Tenants { * tenant_id <<pk>> -- * tenant_code <<unique>> } entity Templates { * id <<pk>> * tenant_id <<fk>> -- * name: text * settings: json -- (tenant_id, name) <<unique>> } entity TemplateDatedSettings { * template_id <<fk>> * tenant_id <<fk>> -- * effective_date_min: timestampz effective_date_max: timestampz * settings: json } Templates "*" -- "1" Tenants Templates "1" -- "*" TemplateDatedSettings