EF4在没有导航的现有数据库上映射一对多

CREATE TABLE Courses (
    CourseID int,
    Name string)

CREATE TABLE Students(
    StudentID int,
    Name string)

CREATE TABLE Courses_Students (
    CourseID int,
    StudentID int)

CREATE TABLE Meetings (
    MeetingID int,
    CourseID int,
    MeetDate datetime)

还有POCO

public class Course {
        public int CourseID { get; set; }
        public string Name { get; set; }
        public virtual ICollection<CourseMeeting> Meetings { get; set; }
        public virtual ICollection<Student> Students { get; set; }
}
public class Student {
        public int StudentID { get; set; }
        public string Name { get; set; }
}
public class Meeting {
        public int MeetingID { get; set; }
        public int CourseID { get; set; }
        public DateTime MeetDate { get; set; }
}

modelBuilder.Entity<Course>().MapSingleType().ToTable("Courses");
modelBuilder.Entity<Student>().MapSingleType().ToTable("Students");
modelBuilder.Entity<Meeting>().MapSingleType().ToTable("Meetings");

使用联接表而不使用导航属性的多对多映射也可以工作(即没有Students.Courses 上指定的属性 WithMany() )

modelBuilder.Entity<Course>()
    .HasMany(c => c.Students)
    .WithMany()
    .Map(StoreTableName.FromString("Courses_Students"), 
        (c, s) => new { CourseID = c.CourseID, StudentID = s.StudentID});

modelBuilder.Entity<Course>().HasMany(c => c.Meetings).WithMany();

因为它需要一个联接表: Invalid object name 'dbo.Course_Meetings' Course Meeting 对象,然后使用

modelBuilder.Entity<Course>()
    .HasMany(c => c.Meetings)
    .WithOptional(m => m.Course)
    .HasConstraint((c, m) => c.CoursID == me.CourseID);

但是我不想使用导航属性。EF4和现有数据库是否可以实现这一点?