DataBaseContext.cs

// src/Repositories/Database/DataBaseContext.cs

#region Using
using Microsoft.EntityFrameworkCore;
using MvcMovie.Models;
#endregion

namespace MvcMovie.Repositories.Database
{
    public class DataBaseContext : DbContext
    {
        public DataBaseContext(DbContextOptions<DataBaseContext> options) : base(options) {}

        public DbSet<Movie> Movies { get; set; }

        protected override void OnModelCreating(ModelBuilder modelBuilder)
        {
            base.OnModelCreating(modelBuilder);
        }
    }
}

Movie.cs

// src/Models/Database/Movie.cs

using System;

namespace MvcMovie.Models.Database
{
    public class Movie
    {
        public int ID { get; set; }
        public string Title { get; set; }
        public DateTime ReleaseDate { get; set; }
        public string Genre { get; set; }
        public decimal Price { get; set; }
    }
}

Startup.cs

namespace MvcMovie
{
    public class Startup
    {
       // ...
       
        public void ConfigureServices(IServiceCollection services)
        {
            services.AddMvc();
            services.AddDbContext<DataBaseContext>(options =>  options.UseNpgsql(Configuration["ConnectionString"]));
            services.AddScoped<DataBaseContext>();
        }
        
        // ...
    }
}