1. API 명세서 작성

API	Method	URL	Request Body	Response
일정 생성	POST	api/schedules	{ "userId": , "title":,"content": }	{ "id":, "title": , "content": ,"createdAt": , "updatedAt": }
일정 조회	GET	/api/schedules/{id}		{ "id": , "title": , "content":, "createdAt":, "updatedAt":}
일정 수정	PUT	/api/schedules/{id}	{ "title":, "content" }	{ "id":, "userId":, "title": , "content": , "updatedAt": }
일정 삭제	DELETE	/api/schedules/{id}
댓글 생성	POST	/api/schedules/{scheduleId}/comments	{ "userId": , "content": }	{ "id": , "scheduleId": , "userId": , "content": , "createdAt":, "updatedAt": }
댓글 조회	GET	/api/comments/{id}		{ "id": , "scheduleId": , "userId": , "content": , "createdAt":, "updatedAt":}
댓글 수정	PUT	/api/comments/{id}	{ "content": }	{ "id": , "scheduleId": , "userId": , "content": , "updatedAt": }
댓글 삭제	DELETE	/api/comments/{id}
유저 생성	POST	/api/users	{ "username": , "email": }	{ "id": , "username": , "email": , "createdAt":, "updatedAt": }
유저 조회	GET	/api/users/{id}		{ "id":, "username":, "email":, "createdAt":, "updatedAt": }
유저 삭제	DELETE	/api/users/{id}

2. ERD 작성

+--------------------+          +--------------- --+          
|      Schedule      |          |       User       |         
+--------------------+          +--------------- --+          
| PK  id             |<-------- | PK  id           |         
|     title          |          |    username      |
| FK  userId         |          |     email        |          
|     content        |          |     createdAt    |          
|     createdAt      |          |     updatedAt    |                     
|     updatedAt      |          |                  |                     
+--------------------+          +----------------- +                       
          |                                     
          |                                     
          |                                     
          |                                     
+---------------------+                          
|       Comment       |                          
+---------------------+                          
| PK  id              |                          
|     content         |                          
| FK  userId          |                          
| FK  scheduleId      |                          
|     createdAt       |                          
|     updatedAt       |                          
+---------------------+