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Please answer the questions based on the following Entity-Relationship diagram (5 points each): 1. Please describe the entity type PRODUCT, including the attributes and the key attribute. Please discuss why Category is double-circled. 2. Please describe the relationship type between SINGLE and SET (in terms of the business rules they present), including the cardinality (two-ways) of the relationship type. NOTE: Please make sure you describe how one instance of a participating entity type is associated with the instances of the other entity type. 3. What is the key attribute of SINGLE, and why? 4. Launch Date is an attribute of Sells. Please discuss what it represents in this diagram. Product_Name Category Price Product_ID PRODUCT Maintains 1.N Launch Date 0.N Location_ID IS-A Sells INVENTORY (D, T) Quantity 0..N Retailer Name RETAILER 1..N Includes NO SET SINGLE Retailer_ID Num Or_Piece Address Type Color Box Size Street City State Zp

Please answer the questions based on the following Entity-Relationship diagram (5 points each): 1. Please describe the entity type PRODUCT, including the attributes and the key attribute. Please discuss why Category is double-circled. 2. Please describe the relationship type between SINGLE and SET (in terms of the business rules they present), including the cardinality (two-ways) of the relationship type. NOTE: Please make sure you describe how one instance of a participating entity type is associated with the instances of the other entity type. 3. What is the key attribute of SINGLE, and why? 4. Launch Date is an attribute of Sells. Please discuss what it represents in this diagram. Product_Name Category Price Product_ID PRODUCT Maintains 1.N Launch Date 0.N Location_ID IS-A Sells INVENTORY (D, T) Quantity 0..N Retailer Name RETAILER 1..N Includes NO SET SINGLE Retailer_ID Num Or_Piece Address Type Color Box Size Street City State Zp

Database System Concepts
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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sconduct. Question 11 20 pts Please answer the questions based on the following Entity-Relationship diagram (5 points each): 1. Please describe the entity type PRODUCT, including the attributes and the key attribute. Please discuss why Category is double-circled. 2. Please describe the relationship type between SINGLE and SET (in terms of the business rules they present), including the cardinality (two-ways) of the relationship type. NOTE: Please make sure you describe how one instance of a participating entity type is associated with the instances of the other entity type. 3. What is the key attribute of SINGLE, and why? 4. Launch Date is an attribute of Sells. Please discuss what it represents in this diagram. Product Name Calegory Prioe Product ID 1..1 PRODUCT Maintains 1.N Launch Date 0.N Location_ID IS-A Sells INVENTORY (D, T) Quantity 0..N Retailer_Name RETAILER 1..N Includes NO SET SINGLE Retailer_ID Num O Plece Address Type Color Box Size Steet State Zip
Transcribed Image Text:sconduct. Question 11 20 pts Please answer the questions based on the following Entity-Relationship diagram (5 points each): 1. Please describe the entity type PRODUCT, including the attributes and the key attribute. Please discuss why Category is double-circled. 2. Please describe the relationship type between SINGLE and SET (in terms of the business rules they present), including the cardinality (two-ways) of the relationship type. NOTE: Please make sure you describe how one instance of a participating entity type is associated with the instances of the other entity type. 3. What is the key attribute of SINGLE, and why? 4. Launch Date is an attribute of Sells. Please discuss what it represents in this diagram. Product Name Calegory Prioe Product ID 1..1 PRODUCT Maintains 1.N Launch Date 0.N Location_ID IS-A Sells INVENTORY (D, T) Quantity 0..N Retailer_Name RETAILER 1..N Includes NO SET SINGLE Retailer_ID Num O Plece Address Type Color Box Size Steet State Zip
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