# ILineageGraphEdge Interface

Namespace: [Qlik.Engine](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.htm)  
Assembly: Qlik.Engine.dll

## Syntax

```
[ValueClass]
public interface ILineageGraphEdge
```

## Properties

| Name | Description |
| --- | --- |
| [Id](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.ILineageGraphEdge.Id.htm#Qlik_Engine_ILineageGraphEdge_Id) | A unique ID of the edge<br><br>JSON property name: qId |
| [MetaData](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.ILineageGraphEdge.MetaData.htm#Qlik_Engine_ILineageGraphEdge_MetaData) | Extra metadata on the edges, e.g. expression etc.<br><br>JSON property name: qMetaData |
| [Relation](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.ILineageGraphEdge.Relation.htm#Qlik_Engine_ILineageGraphEdge_Relation) | Type of relation.<br><br>JSON property name: qRelation |
| [Source](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.ILineageGraphEdge.Source.htm#Qlik_Engine_ILineageGraphEdge_Source) | Source node of the edge. Property on the qNodes object.<br><br>JSON property name: qSource |
| [Target](https://help.qlik.com/en-US/sense-developer/May2026/Subsystems/NetSDKAPIref/Content/Qlik.Engine.ILineageGraphEdge.Target.htm#Qlik_Engine_ILineageGraphEdge_Target) | Target node of the edge. Property on the qNodes object.<br><br>JSON property name: qTarget |