diff --git a/model/ddl.sql b/model/ddl.sql
index 230bdf7..9e13b52 100644
--- a/model/ddl.sql
+++ b/model/ddl.sql
@@ -31,8 +31,8 @@ CREATE TABLE PUBLIC.COMPONENT_TYPE (
 
 CREATE TABLE PUBLIC.GRID (
     ID BIGSERIAL PRIMARY KEY,
+    TAGNAME VARCHAR(32) NOT NULL DEFAULT '',
     NAME VARCHAR(64) NOT NULL DEFAULT '',
-    TAG_NAME VARCHAR(32) NOT NULL DEFAULT '',
     DESCRIPTION VARCHAR(512) NOT NULL DEFAULT '',
     OP INTEGER NOT NULL DEFAULT -1,
     TS TIMESTAMPTZ NOT NULL DEFAULT CURRENT_TIMESTAMP
@@ -41,8 +41,8 @@ CREATE TABLE PUBLIC.GRID (
 CREATE TABLE PUBLIC.ZONE (
     ID BIGSERIAL PRIMARY KEY,
     GRID_ID BIGINT NOT NULL,
+    TAGNAME VARCHAR(32) NOT NULL DEFAULT '',
     NAME VARCHAR(64) NOT NULL DEFAULT '',
-    TAG_NAME VARCHAR(32) NOT NULL DEFAULT '',
     DESCRIPTION VARCHAR(512) NOT NULL DEFAULT '',
     OP INTEGER NOT NULL DEFAULT -1,
     TS TIMESTAMPTZ NOT NULL DEFAULT CURRENT_TIMESTAMP,
@@ -53,8 +53,8 @@ CREATE TABLE PUBLIC.ZONE (
 CREATE TABLE PUBLIC.STATION (
     ID BIGSERIAL PRIMARY KEY,
     ZONE_ID BIGINT NOT NULL,
+    TAGNAME VARCHAR(32) NOT NULL DEFAULT '',
     NAME VARCHAR(64) NOT NULL DEFAULT '',
-    TAG_NAME VARCHAR(32) NOT NULL DEFAULT '',
     DESCRIPTION VARCHAR(512) NOT NULL DEFAULT '',
     IS_LOCAL BOOLEAN NOT NULL DEFAULT FALSE,
     OP INTEGER NOT NULL DEFAULT -1,
diff --git a/model/dml.sql b/model/dml.sql
index f40f0b5..df4e858 100644
--- a/model/dml.sql
+++ b/model/dml.sql
@@ -2,23 +2,23 @@
 
 -- grid initialization example
 INSERT INTO 
-	PUBLIC.GRID (NAME, TAG_NAME, DESCRIPTION, OP)
+	PUBLIC.GRID (TAGNAME, NAME, DESCRIPTION, OP)
 VALUES
-	('电网','grid000','电网的描述',1);
+	('grid000','电网','电网的描述',1);
 
 
 -- zone initialization example
 INSERT INTO 
-	PUBLIC.ZONE (GRID_ID, NAME, TAG_NAME, DESCRIPTION, OP)
+	PUBLIC.ZONE (GRID_ID, TAGNAME, NAME, DESCRIPTION, OP)
 VALUES
-	(1 ,'区域','zone000','区域的描述',1);
+	(1 ,'zone000','区域','区域的描述',1);
 
 
 -- station initialization example
 INSERT INTO 
-	PUBLIC.STATION (ZONE_ID, NAME, TAG_NAME, DESCRIPTION, IS_LOCAL, OP)
+	PUBLIC.STATION (ZONE_ID, TAGNAME, NAME, DESCRIPTION, IS_LOCAL, OP)
 VALUES
-	(1 ,'厂站','station000','厂站的描述',TRUE,1);
+	(1 ,'station000','厂站','厂站的描述',TRUE,1);
 
 
 -- supported standard component type