Week 5 discussions – 3rd normal form

3rd Normal Form

1.  For each of the following relations, indicate the normal form for that relation.  If the relation is not in third normal form, decompose it into 3NF relations.  Functional dependencies (other than those implied by the primary key) are shown where appropriate.

a) CLASS(CourseNo, SectionNo)

 

b) CLASS(CourseNo, SectionNo, Room)

 

c) CLASS(CourseNo, SectionNo, Room, Capacity)

 

      [FD: Room —> Capacity]

 

d) CLASS(CourseNo, SectionNo, CourseName, Room, Capacity)

 

     [FD:  CourseNo –> CourseName; FD: Room è Capacity]

 

2.  The below table contains sample data for parts and for vendors who supply these parts.  In discussing these data with users, we find that part numbers (but not description) uniquely identify parts and vendor names uniquely identify vendors.

 

Link to view table mentioned above at http://i.imgur.com/wBlODnQ.png

 

 

a)      Convert this table to a relation (named PART SUPPLIER) in first normal form.  Illustrate the relation with the sample data in the table

 

b)    List the functional dependencies in PART SUPPLIER and identify a candidate key.

 

c)     For the relation PART SUPPLIER, identify each of the following: an insert anomaly, a delete anomaly, and a modification anomaly.

 

d)    Draw a relational schema for PART SUPPLIER and show the functional dependencies.

 

e)     In what normal form is this relation?

 

 

f)     Develop a set of 3NF relations from PART SUPPLIER.

 

All of this is also attached!

Calculate your order
Pages (275 words)
Standard price: $0.00
Client Reviews
4.9
Sitejabber
4.6
Trustpilot
4.8
Our Guarantees
100% Confidentiality
Information about customers is confidential and never disclosed to third parties.
Original Writing
We complete all papers from scratch. You can get a plagiarism report.
Timely Delivery
No missed deadlines – 97% of assignments are completed in time.
Money Back
If you're confident that a writer didn't follow your order details, ask for a refund.

Calculate the price of your order

You will get a personal manager and a discount.
We'll send you the first draft for approval by at
Total price:
$0.00
Power up Your Academic Success with the
Team of Professionals. We’ve Got Your Back.
Power up Your Study Success with Experts We’ve Got Your Back.