Draw an entity-relationship diagram (ERD) for the following situations:

1. Whenever new patients are seen for the first time, they complete a patient information form that asks their name, address, phone number, and insurance carrier, all of which are stored in the patient information file. Patients can be signed up with only one carrier, but they must be signed up to be seen by the doctor. Each time a patient visits the doctor, an insurance claim is sent to the carrier for payment. The claim must contain information about the visit, such as the date, purpose, and cost. It would be possible for a patient to submit two claims on the same day.

2. The state of Georgia is interested in designing a database that will track its researchers. Information of interest includes researcher name, title, position, university name, location, enrollment, and research interests. Each researcher is as sociated with only one institution, and each researcher has several research interests.

Also, Please specify in the relationships when they are Many to Many, One to Many, One to One and also if they are mandatory or optional.