# Functions
AutoMigrateAll 自動產生 table.
CreateUser 新增 user.
DeleteAnnouncement deletes an announcement by its ID.
GetAllAnnouncements returns an announcement by its ID.
GetUserNameByUserID 透過 id 取得 username.
Ping ping a database.
Setup 資料庫連接設定.
UpdateUser 更新 user.
UserDetailByID 透過 id 取得 user.
UserDetailByUserName 透過 UserName 取得 username.
# Variables
DB 資料庫連接.
# Structs
Announcement database model.
User Database - database.
UserWithUserNameAndID 取得 id 與 username.