A binary relationship has a total participation when every instance of an entity is related to any instance of the other entity. For example; there might be an application domain rule that says every student is associated to a department.
A binary relasyon ay may kabuuang pakikilahok kapag ang bawat pagkakataon ng isang entity ay may kaugnayan sa anumang mga halimbawa ng mga iba pang mga entity. Halimbawa; doon ay maaaring maging isang application domain rule na nagsasabing bawat mag-aaral ay nauugnay sa isang department.