ArcGIS REST Services Directory Login
JSON

Relationships : (NDWR/Monitoring_Sites_Groundwater)

{"relationships": [{
 "id": 0,
 "name": "Groundwater_To_Measure",
 "catalogID": "{A2562F5F-DA55-4CB5-875C-4B02712D64B4}",
 "backwardPathLabel": "Sites_Groundwater",
 "originLayerId": 0,
 "originPrimaryKey": "Site_Name",
 "forwardPathLabel": "Measures_Groundwater",
 "destinationLayerId": 1,
 "originForeignKey": "Site_Name",
 "rules": [],
 "cardinality": "esriRelCardinalityOneToMany",
 "attributed": false,
 "composite": false
}]}