Suppose that we test a discount system in some e-shop. The system can send a loyalty card to a client and admit a discount of 0% (no discount), 5%, or 10% according to the following rules:   “No discount” is the default discount option. A nonregistered user has 0% discount by definition. If a registered user spent more than $1000 in the previous shopping sessions, and there were 19 or less shopping sessions, admit 5% discount. If a registered user spent more than $1000 in the previous shopping sessions and there were at least 20 shopping sessions, admit 10% discount. A loyalty card is sent only to registered customers who spent more than $1000 or had at least 20 shopping sessions.   Please give the complete decision table

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
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Suppose that we test a discount system in some e-shop. The system can send a loyalty card to a client and admit a discount of 0% (no discount), 5%, or 10% according to the following rules:

 

  • “No discount” is the default discount option.
  • A nonregistered user has 0% discount by definition.
  • If a registered user spent more than $1000 in the previous shopping sessions, and there were 19 or less shopping sessions, admit 5% discount.
  • If a registered user spent more than $1000 in the previous shopping sessions and there were at least 20 shopping sessions, admit 10% discount.
  • A loyalty card is sent only to registered customers who spent more than $1000 or had at least 20 shopping sessions.

 

Please give the complete decision table

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