Seminar eminar ID Integer eminar Date Date Seminar Time Time ocation Seminar Title Address String Customer Email Address String Cust_Last Name String -Attended-Cust_First Name String Address String Boolean Cust Address Cust_Phone Do Not Contact

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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I need help with the following

Please look at this schema. Please convert this into a relational schema (you can give the answer as a
picture):
Invoice_
Seminar
Seminar ID Integer
Seminar Date Date
Seminar Time Time
Tax
Total
Location
Seminar Title String
Invoice
Invoice ID
Integer
Invoice Date
Date
Payment Type String
Subtotal
Shipping
Address
Contact About Seminar
Currency
Currency
Currency
Currency
-Attended-
Contact
Contact Date
Date
Contact Type String
Contact Number Integer
Line Item
Line_Number
Order_line Quantity
Unit Price
Total_Price
Customer
Email Address
Cust_Last Name
Cust_First Name
Cust_Address
Cust_Phone
String
String
String
Address
String
Do_Not_Contact Boolean
Customer_contacted
Integer
Integer
Currency
Currency
Customer_Ordered
Product
Integer
String
Unit Price
Currency
Quantity_In_Stock Integer
Product_number
Product Ordered-Description
Transcribed Image Text:Please look at this schema. Please convert this into a relational schema (you can give the answer as a picture): Invoice_ Seminar Seminar ID Integer Seminar Date Date Seminar Time Time Tax Total Location Seminar Title String Invoice Invoice ID Integer Invoice Date Date Payment Type String Subtotal Shipping Address Contact About Seminar Currency Currency Currency Currency -Attended- Contact Contact Date Date Contact Type String Contact Number Integer Line Item Line_Number Order_line Quantity Unit Price Total_Price Customer Email Address Cust_Last Name Cust_First Name Cust_Address Cust_Phone String String String Address String Do_Not_Contact Boolean Customer_contacted Integer Integer Currency Currency Customer_Ordered Product Integer String Unit Price Currency Quantity_In_Stock Integer Product_number Product Ordered-Description
Expert Solution
Step 1

As the customer may or may not attend the seminar or several seminars, the seminar and the customer should have a m:n relationship.

With full seminar participation and minimal contact, seminar and contact should have a 1:1 relationship.

 

For the purpose of learning about the client's information, the customer and contact should have a 1:1 relationship and both should fully participate in the seminar.

 

Due to the fact that an invoice may only be generated when anything is ordered and that a client may place several orders, full consumer engagement is required.

 

Because an invoice is only passed if it is generated, it should have a 1:n relationship with every line number.

 

line number and product n:1 complete involvement on the product and partial on the line number.

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