diff --git a/database/backup_2025-12-21T14-30-37-825Z.sql b/database/backup_2025-12-21T14-30-37-825Z.sql
index 4dd7142..903f9b8 100644
--- a/database/backup_2025-12-21T14-30-37-825Z.sql
+++ b/database/backup_2025-12-21T14-30-37-825Z.sql
@@ -17,10 +17,10 @@ CREATE TABLE `classes` (
 
 -- Dumping data for table `classes`
 INSERT INTO `classes` VALUES
-(1, '计算机2301', '2023', '计算机科学与技术', 2001, 'Sun Dec 21 2025 14:23:14 GMT+0800 (中国标准时间)', 'Sun Dec 21 2025 14:23:14 GMT+0800 (中国标准时间)'),
-(2, '软件工程2302', '2023', '软件工程', 2002, 'Sun Dec 21 2025 14:23:14 GMT+0800 (中国标准时间)', 'Sun Dec 21 2025 14:23:14 GMT+0800 (中国标准时间)');
-
+(1, '计算机2301', '2023', '计算机科学与技术', 2001, '2025-12-21 14:23:14', '2025-12-21 14:23:14'),
+(2, '软件工程2302', '2023', '软件工程', 2002, '2025-12-21 14:23:14', '2025-12-21 14:23:14');
 
+0
 -- Table structure for table `courses`
 DROP TABLE IF EXISTS `courses`;
 CREATE TABLE `courses` (
@@ -43,9 +43,9 @@ CREATE TABLE `courses` (
 
 -- Dumping data for table `courses`
 INSERT INTO `courses` VALUES
-(1, 'CS101', '高级程序设计', '4.0', 2001, 1, NULL, NULL, 'Sun Dec 21 2025 14:23:14 GMT+0800 (中国标准时间)', 'Sun Dec 21 2025 14:23:14 GMT+0800 (中国标准时间)'),
-(2, 'SE201', '软件工程导论', '3.0', 2002, 2, NULL, NULL, 'Sun Dec 21 2025 14:23:14 GMT+0800 (中国标准时间)', 'Sun Dec 21 2025 14:23:14 GMT+0800 (中国标准时间)'),
-(3, 'MAT101', '高等数学', '5.0', 2003, 1, NULL, NULL, 'Sun Dec 21 2025 14:23:14 GMT+0800 (中国标准时间)', 'Sun Dec 21 2025 14:23:14 GMT+0800 (中国标准时间)');
+(1, 'CS101', '高级程序设计', '4.0', 2001, 1, NULL, NULL, '2025-12-21 14:23:14', '2025-12-21 14:23:14'),
+(2, 'SE201', '软件工程导论', '3.0', 2002, 2, NULL, NULL, '2025-12-21 14:23:14', '2025-12-21 14:23:14'),
+(3, 'MAT101', '高等数学', '5.0', 2003, 1, NULL, NULL, '2025-12-21 14:23:14', '2025-12-21 14:23:14');
 
 
 -- Table structure for table `grades`
@@ -74,10 +74,10 @@ CREATE TABLE `grades` (
 
 -- Dumping data for table `grades`
 INSERT INTO `grades` VALUES
-(1, 3001, 1, '90.00', '85.00', '88.00', '87.70', '3.00', NULL, 2001, NULL, 'Sun Dec 21 2025 14:23:14 GMT+0800 (中国标准时间)', 'Sun Dec 21 2025 14:23:14 GMT+0800 (中国标准时间)'),
-(2, 3001, 3, '80.00', '75.00', '82.00', '79.30', '2.00', NULL, 2003, NULL, 'Sun Dec 21 2025 14:23:14 GMT+0800 (中国标准时间)', 'Sun Dec 21 2025 14:23:14 GMT+0800 (中国标准时间)'),
-(3, 3002, 1, '95.00', '92.00', '94.00', '93.70', '4.00', NULL, 2001, NULL, 'Sun Dec 21 2025 14:23:14 GMT+0800 (中国标准时间)', 'Sun Dec 21 2025 14:23:14 GMT+0800 (中国标准时间)'),
-(4, 3003, 2, '88.00', '80.00', '85.00', '84.40', '3.00', NULL, 2002, NULL, 'Sun Dec 21 2025 14:23:14 GMT+0800 (中国标准时间)', 'Sun Dec 21 2025 14:23:14 GMT+0800 (中国标准时间)');
+(1, 3001, 1, '90.00', '85.00', '88.00', '87.70', '3.00', NULL, 2001, NULL, '2025-12-21 14:23:14', '2025-12-21 14:23:14'),
+(2, 3001, 3, '80.00', '75.00', '82.00', '79.30', '2.00', NULL, 2003, NULL, '2025-12-21 14:23:14', '2025-12-21 14:23:14'),
+(3, 3002, 1, '95.00', '92.00', '94.00', '93.70', '4.00', NULL, 2001, NULL, '2025-12-21 14:23:14', '2025-12-21 14:23:14'),
+(4, 3003, 2, '88.00', '80.00', '85.00', '84.40', '3.00', NULL, 2002, NULL, '2025-12-21 14:23:14', '2025-12-21 14:23:14');
 
 
 -- Table structure for table `operation_logs`