private void detach_Relationships(Relationship entity)
 {
     this.SendPropertyChanging();
     entity.Parentage = null;
 }
 private void detach_Relationships1(Relationship entity)
 {
     this.SendPropertyChanging();
     entity.Member1 = null;
 }
 partial void DeleteRelationship(Relationship instance);
 partial void UpdateRelationship(Relationship instance);
 private void attach_Relationships(Relationship entity)
 {
     this.SendPropertyChanging();
     entity.Member = this;
 }
 partial void InsertRelationship(Relationship instance);