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diff --git a/docs/05-5GC OMC restful intefaces.md b/docs/05-5GC OMC restful intefaces.md
index 6bc482e..5c60d88 100644
--- a/docs/05-5GC OMC restful intefaces.md	
+++ b/docs/05-5GC OMC restful intefaces.md	
@@ -1769,6 +1769,66 @@ Example:
   }
 ```
 
+### 10.6 N3IWF在线用户信息
+
+#### 10.6.1 查询N3IWF在线用户信息
+
+说明：为了避免在线用户太多，N3IWF可做限制，如返回不超过100条
+
+* Uri
+
+  ```uri
+  /api/rest/ueManagement/v1/elementType/n3iwf/objectType/ueInfo?imsi={imsi}&msisdn={msisdn}&neId={neId}
+  ```
+* Relations
+
+  OMC -> IMS
+* Params
+
+  * OMC-FE -> OMC-BE, neId={neId}, 指定IMS的neId
+  * OMC -> IMS, imsi={imsi} ，可选，如果都不指定，则查询全部ueInfo
+* Method
+
+  GET
+* Body
+
+  NA
+* Return
+
+```json
+// N3iwfUEInfo N3IWF在线用户信息
+type N3iwfUEInfo struct {
+	IMSI string `json:"imsi"`
+
+	NAI string `json:"nai"`
+	RegState int `json:"regState"`
+	Activetime string `json:"activeTime"`
+}
+
+type N3iwfUEData struct {
+	Data []N3iwfUEInfo `json:"data"`
+}
+```
+
+```json
+{
+    "data": [
+        {
+          "imsi": "460000100000010",
+          "nai": "",
+          "regState": 1,
+          "activeTime": "2023-07-11 18:26:46"
+        },
+        {
+          "imsi": "460000100000011",
+          "nai": "",
+          "regState": 1,
+          "activeTime": "2023-07-11 18:26:46"
+        }  
+    ]
+}
+```
+
 ## 11 系统管理
 
 ### 11.1 OMC系统
diff --git a/docs/07-5GC OMC Database Diagrams v0.41.pdf b/docs/07-5GC OMC Database Diagrams v0.41.pdf
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+++ b/docs/07-5GC OMC Database Diagrams.md	
@@ -1,18 +1,7 @@
-## EMS Database 
+## EMS Database
 
 ---
 
+### 1. Diagram of OMC database
 
-
-### 1. Relationship of menu, account, account_menu, title_info
-
-
-![1679033737734](image/database/1679033737734.png)
-
-通过多表联合查询可一次性获取某个账号的目录结果：
-
-example, acouunt name='manager', lang-key='cn'：
-
-```sql
-SELECT m.id, json_unquote(json_extract(t.title_json, '$.en')) as title, m.parent_id, m.sort_id FROM title_info t, menu m WHERE m.id IN (SELECT am.menu_id FROM account_menu am WHERE am.account_id = (SELECT id FROM account WHERE name='manager')) AND m.title_id = t.id ORDER BY m.id
-```
+![1700190137798](image/07-5GCOMCDatabaseDiagrams/1700190137798.png)
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