BCIS 4660 Sample Solutions Homework #4 Chapters 5 & 6 Pratt & Adamski Exercise #4 Due: Sep 30 (Tues)/ Oct 2 (Thur) Points: 20 points Pratt & Adamski (End of Chapters 5 & 6) Assignments must have Cover sheet/Table of contents and be stapled. • Chapter 5 [pp 180-181; 7th Ed]: Answer questions 1, 2, 3 for Premiere Products and questions 2, 4 for Henry Books. • • • • – Functional Dependency “diagrams/charts” & – Turn in DBDL (i.e., Relations Lists) • Chapter 6 pp 226-7; 7th Ed]: Answer questions 2, 4 for Premiere Products and questions 1, 2, 3 for Henry Books. – Turn in DBDL (i.e., Relations Lists) & – ERDs (i.e., Relationship Diagrams) NAME_________________________ BCIS 4660 Database Warehouse Concepts (20 Points) Homework Assignment #4 Score sheet Assignment Appearance __ Name on Cover page __ Table of Contents __ Overall appearance +ВЅ +ВЅ +ВЅ Problem Number Functional Dependencies (1 point per question) + ВЅ determinants + ВЅ attributes/properties; 3NF Tables (1 point per question) Or Relations + ВЅ each; PP 5-1 PP 5-2 PP 5-3 HB 5-2 HB 5-4 Chapter 5 PP 6-2 PP 6-4 HB 6-1 HB 6-2 HB 6-3 Chapter 6 SUBTOTAL Maximum DBDLs or Relation Lists (1 pt per question) ERDs; (1 pt each) SUBTOTAL MAX. TOTAL Concepts of Database Management, 7th Edition, Pratt & Adamski Maximum SCORE /-1 /2 /2 /2 /2 /2 /10 /2 /2 /2 /2 /2 /10 /20 Student Requirements As per the Grading Form above, students will need to produce the following type of OUTCOMES: 1. Functional Dependency formulas or diagram 2. Relation Lists 3. ERD/Relationship Diagrams Examples of all 3 follow below. Generally students will use the Functional dependencies to construct GOOD relations. Then create an ERD for the database. Functional Dependency Diagram for Orders w/ Sample Functional Dependency Notation Functional Dependency Diagram: Good functional dependency on top Bad functional dependency on bottom This is the Functional Dependence Notation used in class (All final tables Must be in at least 3rd Normal Form: Unnormalized 2NF Table ORDERS Primary Key: (OrderNum, PartNum) F(OrderNum) пѓ OrderDate F(PartNum) пѓ Description Concepts of Database Management, 7th Edition, Pratt & Adamski Chapter 5: Sample Answer #4-1 Functional Dependencies: P&A Notation: This is the Functional Dependence Notation used in class (All final tables Must be in at least 3rd Normal Form: Primary Key: (OrderNum, PartNum) F(OrderNum, PartNum) пѓЁ NumOrdered, QuotedPrice 2NF anomalies resolved: F(OrderNum) пѓ OrderDate F(PartNum) пѓ Description Relation Listing: ORDER[ OrderNum, OrderDate] ORDER_DETAIL[OrderNum, Partnum, NumOrdered, QuotedPrice] PART[PartNum, Description] NOTE: All columns accounted for in example. SAMPLE Relation List: REP table; CUSTOMER table Note: REP & CUSTOMER Relations: REP [RepNum, LastName, FirstName, Street, City, State, Zip, Commission, Rate] CUSTOMER[CustNum, CustLastName, CustFirstName, …, RepNum] Primary Keys: Bold and Underlined Foreign Keys: Italicized and Bold Concepts of Database Management, 7th Edition, Pratt & Adamski Another Example of Functional Dependencies for HOLT Industries Concepts of Database Management, 7th Edition, Pratt & Adamski Tentative List of Entities/Relations HOLT INDUSTRIES EXAMPLE Expand into relations See next page. Concepts of Database Management, 7th Edition, Pratt & Adamski SAMPLE List of Functional Dependencies w/ RELATIONS CUSTOMER [CustomerNumber, SoldToName, SoldToAddr1, SoldToAddr2, SoldToCity, SoldToState, SoldToZip, RepNum] REP[RepNum, RepLastName, RepFirstName] PART [ItemNum, ItemDesc, ItemPrice] INVOICE [InvoiceNo, InvDate, OrderNum, ShipDate, Frieght, InvTotal] Order [OrderNo, OrderDate, PONum, CustNoShipToNum, ShipToName, ShipToAddr1, SoldToAddr2, ShipToCity, SoldToState, ShipToZip ] OrderLine [OrderNum, ItemNum, QuantityOrdered, QuantityShipped, QuantityBO, ItemPrice] Concepts of Database Management, 7th Edition, Pratt & Adamski Complete ERD Diagram; Students should use ACCESS Relationship Diagram Tool Or ERDPlus Software (ERD option) NOT necessary to show Property Ovals on Relationship Diagram. Also, an Intersection table will be Used instead of the Relationship Box shown for OrderLine. Concepts of Database Management, 7th Edition, Pratt & Adamski PP 6-2.b ERD/Relationship Diagram Before: RepNum in Customer ERD/Relationship Diagram After: RepNum In ORDERS PP 6-2.b ALTER Relationships ERD Plus; Repnum in Customer ERD Plus; Repnum in Orders NAME_________________________ BCIS 4660 Database Warehouse Concepts (20 Points) Homework Assignment #4 Score sheet Assignment Appearance __ Name on Cover page __ Table of Contents __ Overall appearance +ВЅ +ВЅ +ВЅ Problem Number Functional Dependencies (1 point per question) + ВЅ determinants + ВЅ attributes/properties; 3NF Tables (1 point per question) Or Relations + ВЅ each; PP 5-1 PP 5-2 PP 5-3 HB 5-2 HB 5-4 Chapter 5 PP 6-2 PP 6-4 HB 6-1 HB 6-2 HB 6-3 Chapter 6 SUBTOTAL Maximum DBDLs or Relation Lists (1 pt per question) ERDs; (1 pt each) SUBTOTAL MAX. TOTAL Concepts of Database Management, 7th Edition, Pratt & Adamski Maximum SCORE /-1 /2 /2 /2 /2 /2 /10 /2 /2 /2 /2 /2 /10 /20
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