Ask Question, Ask an Expert

+61-413 786 465

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

You are in a real estate business renting apartments to

You are in a real estate business renting apartments to customers. Your job is to define an appropriate schema using SQL DDL in MySQL. The relations are Property(Id, Address, NumberOfUnits), Unit(ApartmentNumber, Propert ...

Database and information retrieval assignment - data

Database and Information Retrieval Assignment - Data Privacy Essay Task - Write an essay (aim for 750 words) that addresses issues associated with data proivacy. Use the Australian Privacy Principles - discussed in class ...

Students will select a situation or problem from their

Students will select a situation or problem from their company as a course project that can be solved using a database system. Using MS Access, or MS SQL Server Express, students will create a relational database model o ...

Systems analysis project scenic routes operates a bus

Systems analysis project Scenic Routes operates a bus company that specializes in travelling on secondary roads, rather than Interstate highways. Their slogan is: "It Takes a Little Longer, But It's Scenic." The firm nee ...

Question 1 describe 1nf 2nf 3nf2 explain why 4nf is a

Question: 1: Describe 1NF, 2NF, 3NF. 2: Explain why 4NF is a normal form more desirable than BCNF. The response must be typed, single spaced, must be in times new roman font (size 12) and must follow the APA format.

Question lab 1 creating a database designthis assignment

Question: Lab 1: Creating a Database Design This assignment contains two (2) Sections: Database Design Diagram and Design Summary. You must submit both sections as separate files in order to complete this assignment. Not ...

Select from e d pwhere edeptddept and dcitypcity and

Select * From E, D, P WHERE E.dept=D.dept AND D.city=P.city AND D.budget>1M AND P.priority=A; Assuming relations have the same size and uniform distributions, what is the best plan with Nested Loop joins only? Write it a ...

Question 1 a- consider that you are asked to design an

Question: 1. (a)- Consider that you are asked to design an entity relationship diagram based on the below scenario: A university consists of a number of departments (id, d_name) and each department offers some courses. A ...

Sqlquery 1 how many products have standard price less than

SQL Query 1. How many products have standard price less than 1000? Query 2: Display all attributes for products made of "Cherry" from Product table w/o referring to column names. Query 3: Display all product names having ...

Quesiton 1 what is data-manipulation language dml there are

Quesiton: 1. What is Data-Manipulation Language (DML)? There are four types of access in DML, explain each one. 2. Assume we have a Library Database consists of the following relations: author(author_id, first_name, last ...

  • 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

Why might a bank avoid the use of interest rate swaps even

Why might a bank avoid the use of interest rate swaps, even when the institution is exposed to significant interest rate

Describe the difference between zero coupon bonds and

Describe the difference between zero coupon bonds and coupon bonds. Under what conditions will a coupon bond sell at a p

Compute the present value of an annuity of 880 per year

Compute the present value of an annuity of $ 880 per year for 16 years, given a discount rate of 6 percent per annum. As

Compute the present value of an 1150 payment made in ten

Compute the present value of an $1,150 payment made in ten years when the discount rate is 12 percent. (Do not round int

Compute the present value of an annuity of 699 per year

Compute the present value of an annuity of $ 699 per year for 19 years, given a discount rate of 6 percent per annum. As