diff --git a/counit-server/src/model/archguard_model.rs b/counit-server/src/model/archguard_model.rs
index e9fca5a..4c31b42 100644
--- a/counit-server/src/model/archguard_model.rs
+++ b/counit-server/src/model/archguard_model.rs
@@ -55,9 +55,18 @@ pub struct CodeDatabaseRelation {
     tables: Vec<String>,
     #[serde(default)]
     sqls: Vec<String>,
+    #[serde(default)]
+    implementations: Vec<String>,
+    #[serde(default)]
     relations: Vec<NodeRelation>
 }
 
+impl std::fmt::Display for CodeDatabaseRelation {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(f, "{}.{}.{}", self.package_name, self.class_name, self.function_name)
+    }
+}
+
 #[derive(Serialize, Deserialize)]
 #[serde(rename_all = "camelCase")]
 pub struct NodeRelation {