from flask import Flask , request , jsonify from flask_sqlalchemy import SQLAlchemy from datetime import datetime from sqlalchemy import and_ app = Flask ( __name__ ) app . config [ 'SQLALCHEMY_DATABASE_URI' ] = 'sqlite:///patient_data.db' # Use SQLite for simplicity app . config [ 'SQLALCHEMY_TRACK_MODIFICATIONS' ] = False db = SQLAlchemy ( app ) class PatientData ( db . Model ) : id = db . Column ( db . Integer , primary_key = True ) patient_id = db . Column ( db . String ( 50 ) , nullable = False ) timestamp = db . Column ( db . DateTime , nullable = False ) temperature = db . Column ( db . Float ) blood_pressure = db . Column ( db . String ( 20 ) ) heart_rate = db . Column ( db . Integer ) oxygen_saturation = db . Column ( db . Integer ) ecg = db . Column ( db . String ( 20 ) ) ppg = db . Column ( db . String ( 20 ) ) def to_dict ( self ) : return { ...