Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask DBMS Expert


Home >> DBMS

For each of the following problems, give the revised table definition.  You should support your definitions with the explanation of why you made the changes. Explanation should be specific to current problem, not just a general explanation.

For EACH and EVERY table (including intermediate ones) you SHOULD underline the primary key AND list all the FDs.

problem1)

Given the following table definition and FD constraints.

Shipment (ShipNum, ShipperName, ShipperContact, ShipperFax, PackageNum, PackDepartureDate, PackArrivalDate, PackDestinaltionCity, PackShipCost, InsuranceValue, InsurerCompany, InsurerAddress)

FDs = {ShipNum → ShipperName, ShipperContact, ShipperFax
PackageNum → PackDepartureDate, PackArrivalDate, PackDestinationCity, PackShipCost, InsuranceValue, InsurerCompany InsurerCompany → InsurerAddress }

Notes: A shipper can be shipping more than one package but each package has only one shipper.
a) Based on FDs above, what is the primary key of the table?
b) Is the table definition in 1NF? Why or why not? If not, convert the table to 1NF table(s).
c) Is/are the table(s) in 2NF? Why or why not? If not, convert the table(s) to table(s) that are in 2NF. describe why they are now in 2NF?
d) Are the tables in 3NF? Why or why not? If not, convert table to 3NF. describe why they are now in 3NF?
e) List all of the foreign keys in problem 1d. Identify them by table name and state which table(s) and corresponding attribute(s) they relate to

problem2) NIU trucking wants to keep track of all of its truck and their base cities.  Given the following relation, produce a normalized set of relations which are normalized up through 3rd normal form.

TRUCK (TruckNum, TruckType, TypeDesc, TruckMiles, DatePurchased, TruckSerialNum, BaseCity, BaseState, BasePhone, BaseManagerName, ManagerPhone, BasePhone)

Business rules:
•    A truck is based at a single base.
•    A base can be the base for many trucks.

a) List ALL FDs for the table which hold based upon the descriptions of the constraints above.
b) Is the table definition in 1NF?  Why or why not?  If not, convert the table to 1NF table(s).
c) Is/are the table(s) in 2NF?  Why or why not?  If not, convert the table(s) to table(s) that are in 2NF.  describe why they are now in 2NF? 

d) Are the tables in 3NF?  Why or why not?  If not, convert the table to 3NF.  describe why they are now in 3NF?

e) List all of the foreign keys in problem 2d.  Identify them by the table name and state which table(s) and corresponding attribute(s) they relate to.

problem3) 

Ace Manufacturing constructs products for sale.  Each product is identified by a serial number.  Each product is constructed from many other parts which are purchased from a variety of vendors.  Given the following relation, produce a normalized set of relations which are normalized up through 3rd normal form.  Note: in the following relation the prefix Prod indicates Product, Comp indicates Component and Vend indicates Vendor.

Manufacture(ProdSerialNum, ProdName, ProdType, ProdTypeName, Component(CompSerialNum, CompType, CompName, Vendor(VendCode, VendName, VendAddress, CompPrice)* )*, ProdPrice)

Business Rules:
•    Ace Manufacturing constructs many products.
•    A product is classified as a certain type.
•    A product is made up of components. 
•    Each component can be supplied by many different vendors.
•    A vendor’s components may be found in many different products.
•    Each vendor may charge a different price for the same component.

a) List ALL the FDs for the table that hold based upon the descriptions of the constraints above.
b) Is the table definition in 1NF?  Why or why not?  If not, convert the table to 1NF table(s).
c) Is/are the table(s) in 2NF?  Why or why not?  If not, convert the table(s) to table(s) that are in 2NF.  describe why they are now in 2NF? 
d) Are the tables in 3NF?  Why or why not?  If not, convert the table to 3NF.  describe why they are now in 3NF?
e) List all of the foreign keys in problem 3d.  Identify them by the table name and state which table(s) and corresponding attribute(s) they relate to.

problem

Given the following table definition and constraints:
R (A, B, C, D, E, F, G, H, I, J)

    FD = {A,B,C,D     → E, F, G, H, I J
             B, C, D       → E, F
             A                → G, H, I, J
             E                → F
             H, I            → J }

a) Based on the FDs above, what is the primary key of the table?
b) Is the table definition in 1NF?  Why or why not?  If not, convert the table to 1NF table(s).
c) Is/are the table(s) in 2NF?  Why or why not?  If not, convert the table(s) to table(s) that are in 2NF.  describe why they are now in 2NF? 
d) Are the tables in 3NF?  Why or why not?  If not, convert the table to 3NF.  describe why they are now in 3NF?
e) List all of the foreign keys in problem 4d.  Identify them by the table name and state which table(s) and corresponding attribute(s) they relate to.

DBMS, Programming

  • Category:- DBMS
  • Reference No.:- M9451

Have any Question? 


Related Questions in DBMS

Graph databases assignment1choose a social network that you

Graph Databases Assignment 1. Choose a social network that you use. Say, FaceBook, Twitter, LinkedIn, or anything else. 2. Design a model to store and manage relationship data from these social networks in a graph databa ...

The discussion questionbased on your research and readings

The discussion question Based on your research and readings for the week, respond to the following discussion topics. • Often, systems have only one level of security when it comes to databases. Imagine that someone is t ...

Enterprisebim projectgoal - to enable students to

Enterprise/BIM Project Goal - To enable students to experience the process of building a non-trivial database-backed web application. Tasks 1. Choose any area that interests you - this does not necessarily have to be abo ...

Question 1use the tables below to answer the following

Question 1: Use the tables below to answer the following questions: customerid customerid firstname lastname city state 10101 John Gray Lynden Washington 10298 Leroy Brown Pinetop Arizona 10299 Elroy Keller Snoqualmie Wa ...

Consider a typical sales invoice that would include the

Consider a typical sales invoice that would include the following information. Design a single table to hold all of the information required to store an invoice including this information. Next, apply normalization to re ...

Database systems assignment - student enrolment database a

Database Systems Assignment - Student Enrolment Database A. Task Description 1. Overview Your task is to create and test a database in MySQL using PhpMyAdmin. You are provided with a scenario and supporting documents, de ...

Database management assignmentyou have been hired by

Database Management Assignment You have been hired by National Bank as their new database administrator. Your first task is to upgrade the bank's outdated computer system and implement a relational database management sy ...

Frontlines united states of secrets all Frontline's United States of Secrets, all

Frontline's United States of Secrets, all episodes: http://www.pbs.org/wgbh/frontline/film/united-states-of-secrets/ (Links to an external site.) Nova's Genome specials http://www.pbs.org/wgbh/nova/body/cracking-the-code ...

Lab modifying a database design in visiothis assignment

Lab: Modifying a Database Design in Visio This assignment contains two Sections: Visio Diagram and Design Summary. You must submit both sections as separate files in order to complete this assignment. Use "Appendix A: De ...

Assignmentthis assignment consists of two sections a design

Assignment This assignment consists of two sections: a design document and a revised Gantt chart or project plan. You must submit both sections as separate files for the completion of this assignment. Label each file nam ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen