Model Class: StudentGrade.cs

using System;
using System.ComponentModel.DataAnnotations;
using System.ComponentModel.DataAnnotations.Schema;
using SnapObjects.Data;

namespace Appeon.ApiDoc.Models.School
{
    /// <summary>
    /// This model class maps to the dbo.StudentGrade table.
    /// It uses the primary key EnrollmentID to generate the Where clause for the Update operation.
    /// 
    /// EnrollmentID is the primary key and the identity.
    /// </summary>
    [Table("StudentGrade", Schema = "dbo")]
    [UpdateWhereStrategy(UpdateWhereStrategy.KeyColumns)]
    public class StudentGrade
    {
        [Key]
        [Identity]
        public int EnrollmentID { get; set; }

        public int CourseID { get; set; }

        public int StudentID { get; set; }

        public decimal? Grade { get; set; }

    }
}