SushiBarBase/SushiBar/SushiBarDatabaseImplement/SushiBarDatabase.cs

using Microsoft.EntityFrameworkCore;
using SushiBarDatabaseImplement.Models;

namespace SushiBarDatabaseImplement
{
    public class SushiBarDatabase : DbContext
    {
        protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
        {
            if (optionsBuilder.IsConfigured == false)
            {
                optionsBuilder.UseNpgsql(@"Host=localhost;Database=SushiBar_db7;Username=postgres;Password=postgres");
            }
            base.OnConfiguring(optionsBuilder);
            AppContext.SetSwitch("Npgsql.EnableLegacyTimestampBehavior", true);
            AppContext.SetSwitch("Npgsql.DisableDateTimeInfinityConversions", true);
        }
        public virtual DbSet<Component> Components { set; get; }
        public virtual DbSet<Sushi> Sushis { set; get; }
        public virtual DbSet<SushiComponent> SushiComponents { set; get; }
        public virtual DbSet<Order> Orders { set; get; }
        public virtual DbSet<Client> Clients { set; get; }
        public virtual DbSet<Implementer> Implementers { set; get; }
        public virtual DbSet<MessageInfo> Messages { set; get; }
    }
}