Things that are being stored in the database:

1. Activity_data - Results of the activities. For every activity we store:
   • User name
   • Activity name
   • Date
   • Data

2. Users Users created by Teachers. For every User we store:
   • Name : name of the user
   • Avatar : user's image

3. Groups - Groups created by Teachers. For every Group we store:
   • Name: group's name
   • Description: A brief description explaining what this group is about

4. Users-Groups - To keep track of which users belong to which groups. For every Users-Group we store:
   • User name: name of the user
   • Group name: name of the group to which the user belong to