My first attempt at some dotnetcore / linux program that creates a database / tables using postgresql and entityframework

Program.cs

using System;
using System.Collections.Generic;
using Microsoft.EntityFrameworkCore;

namespace testApp
{
    public class AppContext : DbContext
    {
        public DbSet<Client> Clients { get; set; }

        public DbSet<Patient> Patients { get; set; }
        //connectionString="host=hostname;port=5432;database=databaseName;user id=userName;password=secret"

        protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
        {
            optionsBuilder.UseNpgsql("host=localhost;database=prozacgod;username=prozacgod;password=saturn");
        }

    }

    public class Client
    {
        public int ClientId { get; set; }
        public string Name { get; set; }

        public List<Patient> Patients { get; set; }
    }

    public class Patient 
    {
        public int PatientId {get; set;}

        public string name {get; set;}
    }

    class Program
    {
        static void Main(string[] args)
        {

            Console.WriteLine("Hello World!");

            var context = new AppContext();

            context.Database.EnsureCreated();

            var patient1 = new Patient() { name = "Fluffy" };
            var patient2 = new Patient() { name = "Fluffy" };

            var client = new Client() { Name = "David", Patients = new List<Patient>() { patient1, patient2 } };

            context.Add(client);
            context.Add(patient1);
            context.Add(patient2);

            context.SaveChanges();
        }
    }
}