models:
    Category: { name: string, slug: string }
    City: { country_id: biginteger, name: string, slug: string, longitude: 'float:10', latitude: 'float:10' }
    Country: { name: string, code: string }
    Course: { lecturer_id: biginteger, name: string, description: 'text nullable' }
    Event: { course_id: biginteger, venue_id: biginteger, '"from"': datetime, '"to"': datetime, link: string }
    Lecturer: { team_id: biginteger, name: string, slug: string, active: 'boolean default:1', description: 'text nullable' }
    LoginKey: { k1: string, user_id: biginteger }
    Membership: { team_id: biginteger, user_id: biginteger, role: 'string nullable' }
    Participant: { first_name: string, last_name: string }
    Registration: { event_id: biginteger, participant_id: biginteger, active: 'boolean default:1' }
    Team: { user_id: biginteger, name: string, personal_team: boolean }
    TeamInvitation: { team_id: biginteger, email: string, role: 'string nullable' }
    User: { name: string, public_key: 'string nullable', email: 'string nullable', email_verified_at: 'datetime nullable', password: 'string nullable', remember_token: 'string:100 nullable', current_team_id: 'biginteger nullable', profile_photo_path: 'string:2048 nullable', is_lecturer: 'boolean default:', two_factor_secret: 'text nullable', two_factor_recovery_codes: 'text nullable', two_factor_confirmed_at: 'datetime nullable', timezone: 'string default:Europe/Berlin' }
    Venue: { city_id: biginteger, name: string, slug: string, street: string }
