$1.$ Pharmacist

$-$ Attributes:

$-$ pharmacistID $($Primary Key$)$: Unique identifier for each pharmacist.

$-$ name: Full name of the pharmacist.

$-$ contactNumber: Contact phone number.

$-$ email: Email address.

$-$ licenseNumber: Unique pharmacy license number.

$-$ address: Residential address of the pharmacist.

$-$ dateofHire: Date when the pharmacist joined the pharmacy.

$-$ Methods:

$-$ Manage prescriptions, including verifying and processing orders.

$-$ Oversee inventory management for medication stock.

$-$ Relationship.

$-$ Pharmacist$-$Manages$-$Inventory: Pharmacists manage the inventory, overseeing medication availability and stock levels.

$2.$ Pharmacy

$-$ Attributes:

$-$ pharmacyID $($Primary Key$)$: Unique identifier for the pharmacy.

$-$ name: Name of the pharmacy.

$-$ location: Physical address of the pharmacy.

$-$ contactNumber: Pharmacy's contact phone number.

$-$ operatingHours: Hours during which the pharmacy is open.

$-$ Relationship.

$-$ Pharmacy$-$Has$-$Inventory: The pharmacy holds an inventory of medications available for sale and prescriptions.

$3.$ Customer $($Superclass$)$

$-$ Attributes:

$-$ customerID $($Primary Key$)$: Unique identifier for each customer.

$-$ name: Full name of the customer.

$-$ contactNumber: Contact phone number.

$-$ emain: Email address.

$-$ address: Residential address.

$-$ Specializations: $-$ Regular Customer

$-$ Attributes: loyaltyPoints $($points accumulated for purchases$).$

$-$ Prescription Customer

$-$ Attributes: prescriptionID, insuranceProvider $($insurance company covering prescriptions$).$

$-$ Methods:

$-$ Register and manage customer accounts.

$-$ View order history and prescription status.

$-$ Relationship.

$-$ Customer$-$Orders$-$Medication: Customers place orders for medications, which may or may not require a prescription.

$4.$ Medication $($Superclass$)$

$-$ Attributes:

$-$ medicationID $($Primary Key$)$: Unique identifier for each medication.

$-$ name: Name of the medication.

$-$ dosage: Standard dosage for the medication.

$-$ price: Price of the medication.

$-$ isPrescriptionRequired: Boolean indicating if a prescription is required.

$-$ quantityInStock: Number of units available in stock.

$-$ Specializations:

$-$ Prescription Medication: Attributes include prescribingDoctor, contraindications, sideEffects.

$-$ Over$-$the$-$Counter Medication: Attributes include

storageRequirements, shelfLife.

$-$ Relationship.

$-$ Medication$-$SuppliedBy$-$Supplier: Medications are supplied by various suppliers who provide stock to the pharmacy.

$5.$ Prescription

$-$ Attributes:

$-$ prescriptionId $($Primary Key$)$: Unique identifier for each prescription.

$-$ issuedate: Date the prescription was issued.

$-$ expirationDate: Date the prescription expires.

$-$ doctorName: Name of the prescribing doctor.

$-$ medicationsList: List of medications prescribed. $-$ Methods:

$-$ Track prescriptions and their validity.

$-$ Relationship:

$-$ Prescription$-$Contains$-$Medications: A prescription includes multiple medications, required for specific customers.

Supplier

$-$ Attributes:

$-$ supplierId $($Primary Key$)$: Unique identifier for each supplier.

$-$ name: Name of the supplier company.

$-$ contactNumber: Contact phone number for the supplier.

$-$ email: Supplier's email address.

$-$ address: Business address of the supplier.

$-$ Methods:

$-$ Supply medications to pharmacies and manage delivery schedules.

$-$ Relationship.

$-$ Supplier$-$Supplies$-$Medication: Suppliers provide medications to pharmacies, ensuring that inventory is maintained.

Inventory

$-$ Attributes:

$-$ inventoryID $($Primary Key$)$: Unique identifier for the inventory record.

$-$ pharmacyID: Links to the pharmacy holding this inventory.

$-$ medicationID: Links to the medication in stock.

$-$ quantity: Current quantity of medication in stock.

$-$ lastOpdated: Date when inventory was last updated.

$-$ Inventory$-$Holds$-$Medications: Inventory maintains records of all medications available in the pharmacy.

Key Relationships and Operations

$-$ Relationships:

$-$ Pharmacist$-$Manages$-$Inventory: Pharmacists are responsible for managing and updating inventory.

$-$ Pharmacy$-$Has$-$Inventory: The pharmacy contains an inventory of various medications.

$-$ Customer$-$Orders$-$Medication: Customers place orders for medication, tracked through the system.

$-$ Medication$-$SuppliedBy$-$Supplier: Medications are supplied to the pharmacy by suppliers.

$-$ Prescription$-$Contains$-$Medications: Prescriptions include multiple medications.

$-$ Supplier$-$Supplies$-$Medication: Suppliers provide medications to pharmacies to ensure adequate stock.

$-$ Operations:

$-$ Authentication and Registration: Customers register with the pharmacy system for purchases or prescriptions.

$-$ Inventory Management: Pharmacists can add, delete, or update stock levels for medications.

$-$ Prescription Validation: Pharmacists verify and process prescriptions for medications requiring doctor authorization.

$-$ Order Processing: Customers can order medications, with prescriptions verified for restricted drugs.

$-$ Supplier Coordination: Suppliers provide stock to the pharmacy based on demand. Instructions

Using the information provided:

$1.$ EER Diagram: Create an ER and EER diagram that includes the entities, attributes, and hierarchical relationships within the Pharmacy Management System. Be sure to represent:

$-$ Special izations $($e$.$g$.,$ Regular Customer and Prescription Customer under Customer, Prescription Medication an