Schema Design

MySQL Database Design

Table: patients

Patient information

id: INT, Primary Key, Auto Increment
user_id: INT, Foreign Key → user(id)
age: INT, Not Null, Constraint(age > 0)
description: VARCHAR
phone_number: VARCHAR -- Validated via Code
email_address: VARCHAR -- Validated via Code
home_address: VARCHAR
archived: BOOLEAN, Not Null, default False -- When patient is removed it is marked as Archived and his active appointments are marked as Cancelled.

Table: appointments

Appointment information

id: INT, Primary Key, Auto Increment
doctor_id: INT, Foreign Key → doctors(id)
patient_id: INT, Foreign Key → patients(id)
appointment_time: DATETIME, Not Null
status: INT (0 = Scheduled, 1 = Completed, 2 = Cancelled)
status_changed_timestamp: DATETIME, Not Null
reason: VARCHAR, Not Null

Table: doctors

Doctor information

id: INT, Primary Key, Auto Increment
user_id: INT, Foreign Key → user(id)
specialization: VARCHAR, Not Null
phone_number: VARCHAR -- Validated via Code
email_address: VARCHAR -- Validated via Code
archived: BOOLEAN, Not Null, default False -- When doctor is removed it is marked as Archived and his active appointments are marked as Cancelled.

Table: user

Basic user information for all system users

id: INT, Primary Key, Auto Increment
username: VARCHAR, Not Null, Unique
password: CHAR(64) -- SHA256 hashed password value
role: INT (0 = Admin, 1 = Doctor, 2 = Patient)
name: VARCHAR, Not Null
last_login_timestamp: DATETIME
registration_timestamp: DATETIME, Not Null

Table: office_hours

Table storing regular office hours for a doctor

id: INT, Primary Key, Auto Increment
doctor_id: Foreign Key → doctors(id)
day: INT (0 = Monday, 1 = Tuesday, 2 = Wednesday, 3 = Thursday, 4 = Friday), Not Null
start: TIME, Not Null
end: TIME, Not Null
Constraint: start < end

Table: unavailability_schedule

Table storing temporary unavailability for a doctor

id: INT, Primary Key, Auto Increment
doctor_id: Foreign Key → doctors(id)
start: TIMETIME, Not Null
end: TIMETIME, Not Null
Constraint: start < end

MongoDB Collection Design

Collection: prescriptions

Collection describing a prescriptions for the patients

{
  "_id": "ObjectId('64abc123456')",
  "doctorId":222222,
  "patientId": 123213,
  "appointmentId": 51,
  "medication": "Paracetamol",
  "dosage": "500mg",
  "doctorNotes": "Take 1 tablet every 6 hours.",
  "refillCount": 2,
  "pharmacy": {
    "name": "Walgreens SF",
    "location": "Market Street"
  }
  "timestamp": "2011-12-03T10:15:30Z",
  "expires:" "2012-12-03T10:15:30Z"
}

Collection: messages

Chat message between Doctor and Patient

{
  "_id": "ObjectId('64abc123456')",
  "_parentId": "ObjectId('64abc123456')",
  "fromUserId": 121,
  "toUserId": 121,
  "message": "Where can I get the medicine from",
  "timestamp": "2011-12-03T10:15:30Z"
}

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