A large spreadsheet contains the following information about löčål Pestaurants. A sample por tion D A B Number of Average Аcсepts Restaurant Name Price Range Customer Rating Credit Cards Customer Ratings 182 3.5 false Joey Calzone's Pizzeria lo med 4.5 false 78th Street Bistro 41 Seaside Taqueria 214 4.5 true 3 med lo 202 4.0 false 4 Delicious Sub Shop II 5 Rustic Farm Tavern hi 116 4.5 true 6 ABC Downtown Diner med -1.0 true • In column B, the price range represents the typical cost of a meal, where "lo" indicates under $10, "med" indicates $11 to $30, and "hi" indicates over $30. • In column D, the average customer rating is set to -1.0 for restaurants that have no customer ratings. A student wants to count the number of restaurants in the spreadsheet whose price range is $30 or less and whose average customer rating is at least 4.0. For a given row in the spreadsh suppose prcRange contains the price range as a string and avgRating contains the average customer rating as a decimal number. Which of the following expressions will evaluate to true if the restaurant should be counted and evaluates to false otherwise? A (avgRating 2 4.0) AND ((prcRange = "lo") AND (prcRange = "med")) (avgRating 2 4.0) AND ((prcRange = "lo") OR (prcRange = "med")) (avgRating 2 4.0) OR ((prcRange = "lo") AND (prcRange = "med")) D (avgRating 2 4.0) OR ((prcRange = "lo") OR (prcRange = "med"))
A large spreadsheet contains the following information about löčål Pestaurants. A sample por tion D A B Number of Average Аcсepts Restaurant Name Price Range Customer Rating Credit Cards Customer Ratings 182 3.5 false Joey Calzone's Pizzeria lo med 4.5 false 78th Street Bistro 41 Seaside Taqueria 214 4.5 true 3 med lo 202 4.0 false 4 Delicious Sub Shop II 5 Rustic Farm Tavern hi 116 4.5 true 6 ABC Downtown Diner med -1.0 true • In column B, the price range represents the typical cost of a meal, where "lo" indicates under $10, "med" indicates $11 to $30, and "hi" indicates over $30. • In column D, the average customer rating is set to -1.0 for restaurants that have no customer ratings. A student wants to count the number of restaurants in the spreadsheet whose price range is $30 or less and whose average customer rating is at least 4.0. For a given row in the spreadsh suppose prcRange contains the price range as a string and avgRating contains the average customer rating as a decimal number. Which of the following expressions will evaluate to true if the restaurant should be counted and evaluates to false otherwise? A (avgRating 2 4.0) AND ((prcRange = "lo") AND (prcRange = "med")) (avgRating 2 4.0) AND ((prcRange = "lo") OR (prcRange = "med")) (avgRating 2 4.0) OR ((prcRange = "lo") AND (prcRange = "med")) D (avgRating 2 4.0) OR ((prcRange = "lo") OR (prcRange = "med"))
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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