DataBase Description es el modelo
+-------------------------+
| Author |
+-------------------------+
| id (Primary Key) | Integer
| first_name | String
| last_name | String
| email | String
| password | String
+-------------------------+
|
|
v
+-------------------------+
| Article |
+-------------------------+
| id (Primary Key) | Integer
| title | String
| content | Text
| author_id (Foreign Key)| Integer
| category_id(Foreign Key)| Integer
| published_date | DateTime
| last_updated | DateTime
| active | Boolean
+-------------------------+
|
|
v
+-------------------------+
| Category |
+-------------------------+
| id (Primary Key) | Integer
| name | String
| description | Text
+-------------------------+