qdr.fnd/qdr.fnd.core.data/Entity/GuidEntity.cs

using System;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;

namespace Quadarax.Foundation.Core.Data.Entity
{
    public abstract class GuidEntity : Entity<Guid>
    {
        [Key]
        [Column("Id")]
        [Required]
        public override Guid Id { get; set; }
    }
}