public abstract class EntityBase
    {
        private long _id;

        [Browsable(false)]
        [DisplayName("Иденитификатор")]
        [Column(Name = "[id]", AutoSync = AutoSync.OnInsert, IsPrimaryKey = true, IsDbGenerated = true)]
        public virtual long id
        {
            get { return _id; }
            set { _id = value; }
        }

    }

public abstract class ReferenceEntityBase : EntityBase
    {
        private string _Name;

        [DisplayName("Наименование")]
        [Column(Name = "[Name]")]
        public virtual string Name
        {
            get { return _Name; }
            set { _Name = value; }
        }

        private string _Code;

        [DisplayName("Код")]
        [Column(Name = "[code]")]
        public virtual string Code
        {
            get { return _Code; }
            set { _Code = value; }
        }
    }

[Table(Name="Store")]
    public class Store : ReferenceEntityBase
    {
        public override long id
        {
            get
            {
                return base.id;
            }
            set
            {
                base.id = value;
            }
        }

        public override string Code
        {
            get
            {
                return base.Code;
            }
            set
            {
                base.Code = value;
            }
        }

        public override string Name
        {
            get
            {
                return base.Name;
            }
            set
            {
                base.Name = value;
            }
        }

        public override string ToString()
        {
            return Name;
        }
    }