diff --git a/1781687373_create_category.up.sql b/1781687373_create_category.up.sql
index cde88f3..8d9ac9f 100644
--- a/1781687373_create_category.up.sql
+++ b/1781687373_create_category.up.sql
@@ -1,4 +1,4 @@
-CREATE TABLE `category` (
+CREATE TABLE `course_category` (
     `id` INT PRIMARY KEY AUTO_INCREMENT COMMENT '分类ID',
     `parent_id` INT DEFAULT 0 COMMENT '父分类ID，0表示顶级分类',
     `name` VARCHAR(100) NOT NULL COMMENT '分类名称',
diff --git a/1781687994_create_course.up.sql b/1781687994_create_course.up.sql
index 717995a..be9aefd 100644
--- a/1781687994_create_course.up.sql
+++ b/1781687994_create_course.up.sql
@@ -12,8 +12,8 @@ CREATE TABLE `course` (
 `cover_image` VARCHAR(500) COMMENT '月度课程封面',
 
 -- 价格与售卖
-`price` DECIMAL(10, 2) NOT NULL DEFAULT 0.00 COMMENT '售价（元）',
-`original_price` DECIMAL(10, 2) COMMENT '原价/划线价',
+`price` INTEGER NOT NULL DEFAULT 0 COMMENT '售价（分）',
+`original_price` INTEGER NOT NULL DEFAULT 0 COMMENT '原价/划线价',
 `is_published` TINYINT DEFAULT 1 COMMENT '是否上架：1-下架 2-上架',
 
 -- 时间戳
diff --git a/1781688012_create_video.up.sql b/1781688012_create_video.up.sql
index d550a03..e45c912 100644
--- a/1781688012_create_video.up.sql
+++ b/1781688012_create_video.up.sql
@@ -1,4 +1,4 @@
-CREATE TABLE `video` (
+CREATE TABLE `course_video` (
     `id` INT PRIMARY KEY AUTO_INCREMENT COMMENT '视频ID',
     `course_id` INT NOT NULL COMMENT '所属月度课程ID',
     `title` VARCHAR(255) NOT NULL COMMENT '视频标题',