ERD #3 A hospital has a large number of registered patients. Patients are admitted to the hospital by physicians. Attributes of PATIENT include Patient ID , patient name, and admit date. Any patient who is admitted must have exactly one admitting physician. A physician may admit zero, one or any number of patients. Once admitted, a given patient must be treated by at least one physician. Attributes of PHYSICIAN include Physician ID, name, and specialty. A particular physician may treat any number of patients, or may not treat any patients. A patient may be treated by many physicians