var cards = db.Cards.Select(c => 
                new {
                    CardNumber = c.CardNumber,
                    Name = c.Person.Name,
                    Date = c.Person.Date
                }
            ).ToList();

var db = new MyDbContext()
var card = db.Cards.Find(id);

    public class Person
    {
        public int Id { get; set; }

        public string Name { get; set; }

        public System.DateTime Date { get; set; }

    }

    public class Card
    {
        public int Id { get; set; }
        
        public int CardNumber { get; set; }

        public Person Person{ get; set; }
    }

var member = db.Cards.Include(x => x.Person).Where(i => i.Id == id).SingleOrDefault();

                  Person personModel= new Person()
                    {  Id = id
                        TimeBack = System.DateTime.Now,
                    };
var db = new MyDbContext())
            {
                db.Persons.Attach(personModel);
                db.Entry(personModel).State = EntityState.Modified;                
                return db.SaveChanges() > 0;

db.Categories.Where(c => c.<имя атрибута> == <значение>)