DataAnnotations - TimeStamp Attribute:

TimeStamp attribute can be applied to only one byte array property of a domain class. TimeStamp attribute creates a column with timestamp datatype. Code-First automatically use this TimeStamp column in concurrency check.

Consider the following example.

using System.ComponentModel.DataAnnotations;

public class Student
    public Student()

    public int StudentKey { get; set; }
    public string StudentName { get; set; }
    public byte[] RowVersion { get; set; }

As you can see in the above example, TimeStamp attribute is applied to Byte[] property of the Student class. So, Code First will create a timestamp column RowVersion in the Student table as shown below.

dataannotations TimeStamp attribute