Develop an enhanced entity$-$relationship diagram for the following project

description.

As a large service organization, Mountain View Community Hospital depends on a

large number of persons for its continued success. There are four groups of persons

on whom the hospital is most dependent: employees, physicians, patients, and

volunteers. Of course, some common attributes are shared by all of these persons:

Person$\_$ID $($identifier$),$ Name, Address, City$/$State$/$Zip$,$ Birth$\_$Date, and Phone.

Each of the four groups of persons has at least one unique attribute of its own.

Employees have a Date$\_$Hired, Volunteers have a Skill, Physicians have a Specialty

and a Pager#$,$ and Patients have a Contact$\_$date $($date of first contact with the

hospital$).$ Some other persons in the hospital community do not belong to one of

these four groups $($their numbers are relatively small$).$

However, a particular person may belong to two $($or more$)$ of these groups at a given time $($e$.$g$.,$ Patient and Volunteer$).$

Each patient has one $($and only one$)$ physician responsible for that patient. A given

physician may not be responsible for a patient at a given time, or may be responsible for one or more patients. Patients are divided into two groups: resident and outpatient. Each resident patient has a Date$\_$Admitted attribute. Each outpatient is scheduled for zero or more visits. Visits are characterized by a Date.

Employees are subdivided into three groups: nurse, staff, and technicians. Only nurse has the attribute Certificate, which indicates the qualification $($RN$,$ LPN$,$ etc.$).$ Only

staff has the attribute Job$\_$Class, and only technician has the attribute Skill. Each

nurse is assigned to one $($and only one$)$ care center. Attributes of care center are

Name $($identifier$)$ and Location. A care center may have one or more nurses assigned

to it$.$

Each technician is assigned to one or more laboratories. Attributes of laboratory

include Name $($identifier$)$ and Location. A laboratory must have at least one technician assigned to it and may have any number of technicians assigned.

A care center may have one or more beds $($up to any number$)$ assigned to it$.$ The only attribute of bed is Bed$\_$ID $($identifier$).$ Bed$\_$ID is a composite attribute, with

components Bed# and Room#$.$ Each resident patient must be assigned to a bed. A bed may or may not have a resident patient assigned to it a given time but will be assigned to many resident patients over time.

Can you sketch this on paper or create a diagram in Lucidchart to help better understand the problem?