Establish model data required for application : Users, BlogPosts, and Comments. Each table has attributes, and relationship as below :

User's activities consists of :

• Add new user, Edit and delete existing user's profile.
• Post new article, Edit and delete existing article.
• Comment to an article, and delete existing comment.
• Doing additional activations, such as : user's activation, post's activation, and comment's activation.

User's authorization divided into user's role, such as : admin, and user:

• Only admin can do activation activities.
• Only admin and authorized users can edit, and delete their own article
• Only admin can delete comments.