Model Class: D_Course.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;
using SnapObjects.Data;
using DWNet.Data;
using Newtonsoft.Json;

namespace Appeon.ApiDoc.Models
{
    [DataWindow("d_course", DwStyle.Grid)]
    [Table("Course", Schema = "dbo")]
    #region DwSelectAttribute  
    [DwSelect("PBSELECT( VERSION(400) TABLE(NAME=\"Course\" ) @(_COLUMNS_PLACEHOLDER_) )")]
    #endregion
    [UpdateWhereStrategy(UpdateWhereStrategy.KeyAndConcurrencyCheckColumns)]
    [DwKeyModificationStrategy(UpdateSqlStrategy.DeleteThenInsert)]
    public class D_Course
    {
        [Key]
        [DwColumn("Course", "CourseID")]
        public int Courseid { get; set; }

        [ConcurrencyCheck]
        [DwColumn("Course", "Title")]
        public string Title { get; set; }

        [ConcurrencyCheck]
        [DwColumn("Course", "Credits")]
        public int Credits { get; set; }

        [ConcurrencyCheck]
        [DwColumn("Course", "DepartmentID")]
        [DwChild("Departmentid", "Name", typeof(Dddw_Department), AutoRetrieve = true)]
        public int Departmentid { get; set; }

    }

}