1. An ER-diagram designer comes up with the following argument. "It isn't necessary to have all these different entities and relationships. Just create one kind of entity, say E, one kind of binary relationship. say B, one kind of ternary relationship, say T, and so on. Then all entities belong to E, and we give E all attributes that an entity can possibly have. When an entity is missing a certain attribute we'll record a NULL. Similarly, every possible binary relationship could be mapped to B, again allowing for all possible attributes in B. By doing this exercise, we have a much simpler design: just one entity set and a small number of relationship sets." Explain why the design proposed by this designer is unsatisfactory. Make sure to describe all of the potential deficiencies of the design. Do you agree that the proposed design is "simpler