Problem A: A retail chain of pharmacies, Prescriptions-R-X that sells prescription drugs has hired your team of data analyst to design its database. Here's the information that your team gathers after discussions with managers from Prescriptions-R-X: Patients are identified by an SSN, and their names, addresses, and ages must be recorded. Doctors are identified by an SSN. For each doctor, the name, specialty, and years of experience must be recorded. Each pharmaceutical company is identified by name and has a phone number. For each drug, the trade name and formula must be recorded. Each drug is sold by a given pharmaceutical company, and the trade name identifies a drug uniquely from among the products of that company. If a pharmaceutical company is deleted, you need not keep track of its products any longer. Each pharmacy has a name, address, and phone number. Every patient has a primary physician. Every doctor has at least one patient. Each pharmacy sells several drugs and has a price for each. A drug could be sold at several pharmacies, and the price could vary from one pharmacy to another. Doctors prescribe drugs for patients. A doctor could prescribe one or more drugs for several patients, and a patient could obtain prescriptions from several doctors. Each prescription has a date and a quantity associated with it. You can assume that if a doctor prescribes the same drug for the same patient more than once, only the last such prescription needs to be stored. Pharmaceutical companies have long-term contracts with pharmacies. A pharmaceutical company can contract with several pharmacies, and a pharmacy can contract with several pharmaceutical companies. For each contract, you have to store a start date, an end date, and the text of the contract. Pharmacies appoint a supervisor for each contract. There must always be a super-visor for each contract, but the contract supervisor can change over the life time of the contract. (A1). Draw an ER diagram (using Visio) that captures the above information. Your ER Diagram should be in 3rd Normal Form. (A2). How would your design change if each drug must be sold at a fixed price by all pharmacies?

Problem A: A retail chain of pharmacies, Prescriptions-R-X that sells prescription drugs has hired your team of data analyst to design its database. Here's the information that your team gathers after discussions with managers from Prescriptions-R-X: Patients are identified by an SSN, and their names, addresses, and ages must be recorded. Doctors are identified by an SSN. For each doctor, the name, specialty, and years of experience must be recorded. Each pharmaceutical company is identified by name and has a phone number. For each drug, the trade name and formula must be recorded. Each drug is sold by a given pharmaceutical company, and the trade name identifies a drug uniquely from among the products of that company. If a pharmaceutical company is deleted, you need not keep track of its products any longer. Each pharmacy has a name, address, and phone number. Every patient has a primary physician. Every doctor has at least one patient. Each pharmacy sells several drugs and has a price for each. A drug could be sold at several pharmacies, and the price could vary from one pharmacy to another. Doctors prescribe drugs for patients. A doctor could prescribe one or more drugs for several patients, and a patient could obtain prescriptions from several doctors. Each prescription has a date and a quantity associated with it. You can assume that if a doctor prescribes the same drug for the same patient more than once, only the last such prescription needs to be stored. Pharmaceutical companies have long-term contracts with pharmacies. A pharmaceutical company can contract with several pharmacies, and a pharmacy can contract with several pharmaceutical companies. For each contract, you have to store a start date, an end date, and the text of the contract. Pharmacies appoint a supervisor for each contract. There must always be a super-visor for each contract, but the contract supervisor can change over the life time of the contract. (A1). Draw an ER diagram (using Visio) that captures the above information. Your ER Diagram should be in 3rd Normal Form. (A2). How would your design change if each drug must be sold at a fixed price by all pharmacies?

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Problem A:

A retail chain of pharmacies, Prescriptions-R-X that sells prescription drugs has hired your team of data analyst to design its database. Here's the information that your team gathers after discussions with managers from Prescriptions-R-X:

Patients are identified by an SSN, and their names, addresses, and ages must be recorded.
Doctors are identified by an SSN. For each doctor, the name, specialty, and years of experience must be recorded.
Each pharmaceutical company is identified by name and has a phone number.
For each drug, the trade name and formula must be recorded. Each drug is sold by a given pharmaceutical company, and the trade name identifies a drug uniquely from among the products of that company. If a pharmaceutical company is deleted, you need not keep track of its products any longer.
Each pharmacy has a name, address, and phone number.
Every patient has a primary physician. Every doctor has at least one patient.
Each pharmacy sells several drugs and has a price for each. A drug could be sold at several pharmacies, and the price could vary from one pharmacy to another.
Doctors prescribe drugs for patients. A doctor could prescribe one or more drugs for several patients, and a patient could obtain prescriptions from several doctors. Each prescription has a date and a quantity associated with it. You can assume that if a doctor prescribes the same drug for the same patient more than once, only the last such prescription needs to be stored.
Pharmaceutical companies have long-term contracts with pharmacies. A pharmaceutical company can contract with several pharmacies, and a pharmacy can contract with several pharmaceutical companies. For each contract, you have to store a start date, an end date, and the text of the contract.
Pharmacies appoint a supervisor for each contract. There must always be a super-visor for each contract, but the contract supervisor can change over the life time of the contract.

(A1). Draw an ER diagram (using Visio) that captures the above information. Your ER Diagram should be in 3^rd Normal Form.

(A2). How would your design change if each drug must be sold at a fixed price by all pharmacies?

(A3) Write the SQL code for the ER model you designed in A1 as shown on page D-5 of the attachment.

Problem B: Problem #11 on Page 242 (Chapter 6) of Textbook

(B1). Provide the 3rd Normal Form Tables based on the information in Table P6.11 (page 242)

(B2). Once you have converted to 3rd Normal form (#1), draw the normalized ER Model (using Visio)

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