Genealogy Logical Data Model (LDS)

This is a simple genealogy logical data model that I developed in 10 minutes. Excuse my ascii art.

I hope to build an application on top of it.

                           +---------------+
                           | FATHER        |
      +--------------------+---------------+
      | fathered           |               |
     -+-                   +---------------+
      ^                               v
+---------------------+              -+-
|PERSON               |               | father to
+---------------------+               |
|person_id            |---------------+
|~~~~~~~~~            |
|person_date_of_birth |
|person_place_of_birth|
|person_name          |---------------+
|person_details       |               | mother to
+---------------------+              -+-
      v                               ^
     -+-                   +---------------+
      | mothered           | MOTHER        |
      +--------------------+---------------+
                           |               |
                           +---------------+

This is how it reads

• About each person we can remember their person_id, person_date_of_birth, person_place_of_birth, person_name, person_details, person's father, person's mother, person mother to and person father to.
• About each mother we can remember the person, and people mothered.
• About each father we can remember the person, and people fathered.

One interesting this about this model is that a person can father and mother themselves. I hope this is not how life begun.