Create three Entity$-$Relationship diagrams based on the specification provided. Ensure that

each diagram accurately represents the information from its respective specification, clearly

indicating identifiers and cardinality constraints.

Part $1$:

UPS prides itself on having up$-$to$-$date information on the processing and current location of

each shipped item. To do this, UPS relies on a company$-$wide information system. Shipped

items are the heart of the UPS product tracking information system.

Shipped items can be characterized by item number $($unique$),$ destination, and delivery date.

Shipped items are received into the UPS system at a single retail center. Retail centers are

characterized by their type, uniquid, and address. Shipped items make their way to their

destination via one or more standard UPS transportation events $($i$.$e$.,$ flights, truck deliveries$).$

These transportation events are characterized by a unique schedule Number, a type $($e$.$g$.,$ flight,

truck$).$

Insert your ERD here.

Part $2$:

Car$-$insurance company wants to construct ER diagram. Customers own one or more cars. Each Customer can be characterized by customer ID$,$ name, and address. Car item is characterized by

car ID$,$ model, year. Accident item is characterized by report number, location, date.

Insert your ERD here.

Part $3$:

The Peoria animal clinic has many types of animals and the following specifications:

$$ Every animal type is characterized by type id $($unique$)$ and type name like dog or cat.

$$ Every animal must belong to exactly one type, but one type has many animals. Each animal

can be characterized by animal id$,$ age, and gender.

$$ Animals may have diseases and one disease infects many animals. If certain animal has a

disease, the beginning time and the duration of a disease need to be recorded.

$$ A disease is characterized by a unique name.

$$ An employee takes care of only one type of animal, but one animal type may be cared by

many employees.

$$ An employee may or may not be familiar with diseases. But every disease must be handled

by one employee.

$$ Employees are characterized by employee ID$,$ name, SSN$,$ address, and phone number.

$$ All animals must be in a cage. One cage may occupy many animals.

$$ Every cage is characterized by cage ID$,$ space, and height.

Insert your ERD here.