diff --git a/backend/src/apiserver/model/resource_reference.go b/backend/src/apiserver/model/resource_reference.go
index 043dbd3a0c0..6336e43571d 100644
--- a/backend/src/apiserver/model/resource_reference.go
+++ b/backend/src/apiserver/model/resource_reference.go
@@ -22,16 +22,16 @@ type ResourceReference struct {
 	ResourceUUID string `gorm:"column:ResourceUUID; not null; primary_key"`
 
 	// The type of the resource object
-	ResourceType common.ResourceType `gorm:"column:ResourceType; not null; primary_key"`
+	ResourceType common.ResourceType `gorm:"column:ResourceType; not null; primary_key; index:referencefilter"`
 
 	// The ID of the resource that been referenced to.
-	ReferenceUUID string `gorm:"column:ReferenceUUID; not null; "`
+	ReferenceUUID string `gorm:"column:ReferenceUUID; not null; index:referencefilter"`
 
 	// The name of the resource that been referenced to.
 	ReferenceName string `gorm:"column:ReferenceName; not null; "`
 
 	// The type of the resource that been referenced to.
-	ReferenceType common.ResourceType `gorm:"column:ReferenceType; not null; primary_key"`
+	ReferenceType common.ResourceType `gorm:"column:ReferenceType; not null; primary_key; index:referencefilter"`
 
 	// The relationship between the resource object and the resource that been referenced to.
 	Relationship common.Relationship `gorm:"column:Relationship; not null; "`