diff --git a/src/main/java/models/objectOrientedTransfer/Relation.java b/src/main/java/models/objectOrientedTransfer/Relation.java
index a2388ed..7dce20b 100644
--- a/src/main/java/models/objectOrientedTransfer/Relation.java
+++ b/src/main/java/models/objectOrientedTransfer/Relation.java
@@ -26,6 +26,22 @@
 		this.dstResourceNode = dstResourceNode;
 		this.multiplicity = multiplicity;
 	}
+
+	public Relation(List<ReferenceEdge> srcResource, ObjectNode dstResourceNode, MultiplicityValue multiplicity) {
+		this.isFlat = true;
+		this.srcResource = srcResource;
+		this.dstResource = new ArrayList<>();
+		this.dstResourceNode = dstResourceNode;
+		this.multiplicity = multiplicity;
+	}
+
+	public Relation(ObjectNode srcResourceNode, List<ReferenceEdge> dstResource, MultiplicityValue multiplicity) {
+		this.isFlat = true;
+		this.srcResource = new ArrayList<>();
+		this.dstResource = dstResource;
+		this.srcResourceNode = srcResourceNode;
+		this.multiplicity = multiplicity;
+	}
 	
 	public boolean isFlat() {
 		return isFlat;