ManyToMany и каскадное удаление

    [Table("Projects")]
    public class Project
    {
        [PrimaryKey, AutoIncrement, Column("_id")]
        public int Id { get; set; }
 
        [Column("_name")]
        public string Name { get; set; }
        
        [ManyToMany(typeof(ProjectEmployee), CascadeOperations = CascadeOperation.All)]
        public List<Employee> Employees { get; set; }
 
        [Column("_start_date")]
        public DateTime StartDate { get; set; }
 
        [Column("_finish_date")]
        public DateTime FinishDate { get; set; }
 
        public Project()
        {
            StartDate = DateTime.Today;
            FinishDate = DateTime.Today;
        }
    }
 
    [Table("Employees")]
    public class Employee
    {
        [PrimaryKey, AutoIncrement, Column("_id")]
        public int Id { get; set; }
 
        [Column("_last_name")]
        public string LastName { get; set; }
 
        [Column("_name")]
        public string Name { get; set; }
 
        [Column("_patronymic")]
        public string Patronymic { get; set; }
 
        [ManyToMany(typeof(ProjectEmployee), CascadeOperations = CascadeOperation.All)]
        public List<Project> Projects { get; set; }
    }
 
    [Table("ProjectEmployeess")]
    public class ProjectEmployee
    {
        [PrimaryKey, AutoIncrement, Column("_id")]
        public int Id { get; set; }
        
        [ForeignKey(typeof(Project))]
        //[OneToMany(CascadeOperations = CascadeOperation.All)]
        [Column("_project_id")]
        public int ProjectId { get; set; }
 
        [ForeignKey(typeof(Employee))]
        //[OneToMany(CascadeOperations = CascadeOperation.All)]
        [Column("_employee_id")]
        public int EmployeeId { get; set; }
    }

public class GenericRepository
    {
        private SQLiteConnection database;
        public GenericRepository(string databasePath)
        {
            database = new SQLiteConnection(databasePath);
            
            SQLiteCommand command = database.CreateCommand("PRAGMA foreign_keys = ON;");
            command.ExecuteNonQuery();
 
            database.CreateTable<Employee>();
            database.CreateTable<Project>();
            database.CreateTable<ProjectEmployee>();
        }
 
/*................*/
}