diff --git a/migrations/20240426150045_user-roles.sql b/migrations/20240426150045_user-roles.sql
index b9f9295..e541a09 100644
--- a/migrations/20240426150045_user-roles.sql
+++ b/migrations/20240426150045_user-roles.sql
@@ -9,6 +9,11 @@ CREATE TRIGGER user_update_timestamp
   BEGIN
     UPDATE user SET update_timestamp = DATETIME('now') WHERE rowid = old.rowid;
   END;
+CREATE TRIGGER user_insert_timestamp
+  AFTER INSERT ON user
+  BEGIN
+    UPDATE user SET update_timestamp = DATETIME('now') WHERE rowid = new.rowid;
+  END;
 
 CREATE TABLE role (
     name TEXT NOT NULL PRIMARY KEY,
@@ -20,6 +25,11 @@ CREATE TRIGGER role_update_timestamp
   BEGIN
     UPDATE role SET update_timestamp = DATETIME('now') WHERE rowid = old.rowid;
   END;
+CREATE TRIGGER role_insert_timestamp
+  AFTER INSERT ON role
+  BEGIN
+    UPDATE role SET update_timestamp = DATETIME('now') WHERE rowid = new.rowid;
+  END;
 
 CREATE TABLE privilege (
     name TEXT NOT NULL PRIMARY KEY,
@@ -31,6 +41,11 @@ CREATE TRIGGER privilege_update_timestamp
   BEGIN
     UPDATE privilege SET update_timestamp = DATETIME('now') WHERE rowid = old.rowid;
   END;
+CREATE TRIGGER privilege_insert_timestamp
+  AFTER INSERT ON privilege
+  BEGIN
+    UPDATE privilege SET update_timestamp = DATETIME('now') WHERE rowid = new.rowid;
+  END;
 
 CREATE TABLE user_role (
     user_name TEXT NOT NULL,
@@ -46,6 +61,11 @@ CREATE TRIGGER user_role_update_timestamp
   BEGIN
     UPDATE user_role SET update_timestamp = DATETIME('now') WHERE rowid = old.rowid;
   END;
+CREATE TRIGGER user_role_insert_timestamp
+  AFTER INSERT ON user_role
+  BEGIN
+    UPDATE user_role SET update_timestamp = DATETIME('now') WHERE rowid = new.rowid;
+  END;
 
 CREATE TABLE role_privilege (
     role_name TEXT NOT NULL,
@@ -61,3 +81,32 @@ CREATE TRIGGER role_privilege_update_timestamp
   BEGIN
     UPDATE role_privilege SET update_timestamp = DATETIME('now') WHERE rowid = old.rowid;
   END;
+CREATE TRIGGER role_privilege_insert_timestamp
+  AFTER INSERT ON role_privilege
+  BEGIN
+    UPDATE role_privilege SET update_timestamp = DATETIME('now') WHERE rowid = new.rowid;
+  END;
+
+CREATE VIEW V_UUID_V4 as
+SELECT 
+  lower(
+    hex(randomblob(4)) || '-' || hex(randomblob(2)) || '-' || '4' || 
+    substr(hex( randomblob(2)), 2) || '-' || 
+    substr('AB89', 1 + (abs(random()) % 4) , 1)  ||
+    substr(hex(randomblob(2)), 2) || '-' || 
+    hex(randomblob(6))
+  ) UUID;
+
+INSERT INTO role (name, update_process) VALUES ('admin', 'initial');
+INSERT INTO role (name, update_process) VALUES ('sales', 'initial');
+INSERT INTO role (name, update_process) VALUES ('hr', 'initial');
+
+INSERT INTO privilege (name, update_process) VALUES ('admin', 'initial');
+INSERT INTO privilege (name, update_process) VALUES ('sales', 'initial');
+INSERT INTO privilege (name, update_process) VALUES ('hr', 'initial');
+
+INSERT INTO role_privilege (role_name, privilege_name, update_process) VALUES ('sales', 'sales', 'initial');
+INSERT INTO role_privilege (role_name, privilege_name, update_process) VALUES ('hr', 'hr', 'initial');
+INSERT INTO role_privilege (role_name, privilege_name, update_process) VALUES ('admin', 'admin', 'initial');
+INSERT INTO role_privilege (role_name, privilege_name, update_process) VALUES ('admin', 'sales', 'initial');
+INSERT INTO role_privilege (role_name, privilege_name, update_process) VALUES ('admin', 'hr', 'initial');