Question 4Please answer them correctly Of the following statements, the one that is TRUE isa. If A INTERSECTION C = B INTERSECTION C, then A = BO b. If A SYMMETRIC-DIFFERENCE B = A, then B = AО с.If A INTERSECTION B = A UNION B, then A = BO d. A SYMMETRIC-DIFFERENCE A = Ae.Let P(S) denote the power set for a set S. There is a set A such that | P(S)| =24

The statement If A ∩ B = A ∪ B, then A = BBecause if both sides are equal then A=B.Because it…

Answered: Of the following statements, the one…

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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The following list shows the items and prices for a restaurant order. Calculate the total amount if there is 7.5% tax and the customer leaves a 15% gratuity. 1 appetizer: $8.99 2 entrees: $14.99 each 1 entree: $12.99 3 drinks: $1.99 each a. $70.96 b. $71.62 c. $75.31 d. $75.97 Please select the best answer from the choices provided A Mark this and retum No hand written and fast answer with explanation
Question 13: Evaluate ACE16 +102 10 and show the answer in octal form.
(1) for each Customer (e.g., customer C), display all other customers who have higher salary than this Customer (e.g., customer C). (use inner join, display each customer’s ID, name, and all higher salaries, you don’t need to display information about the customers who have higher salary.) (2) for each Customer (e.g., customer C), display all other customers who have higher salary and are younger than this Customer (e.g., customer C).
You may use the Boolean operator to search for data on two separate topics at once. To get the most relevant results, Kevin should utilize which of the following Boolean operators?
For questions 4 and 5, use the following order for the rows in your truth tables.P QT TT FF TF FP Q RT T TT T FT F TT F FF T TF T FF F TF F F4. (8 marks) Construct truth tables for the following statement forms.In your truth table, make sure that you include a column for each intermediate expression that you evaluate on your way to your final answer.(a) (P ↔ ¬Q) ∧ (P ↔ Q)(b) (¬P ∨ (¬Q ∨ ¬R)) ∨ (P ∧ Q)
What is the Median for the following numbers: 8, 77, 44, 83, 63 Level of difficulty = 1 of 2 Please format to 2 decimal places?
Students: Johnson, Williams, Matt, Jones, Eric, Lili, John and Jason, whose grades are listed below. Each column is the grades each student received. There are 8 students with 10 grades each. Johnson: 79, 92, 85, 0, 100, 64, 72, 99, 90, 86 Williams: 80, 75 93, 94, 0, 90, 89, 88, 87, 86 Matt: 82, 67, 72, 74, 89, 0, 70, 89, 100, 76 Jones: 85, 84, 82.5, 82, 84, 80, 80.5, 90, 96, 85 Eric: 90, 91, 87, 85.5, 86.5, 0, 90, 90, 91, 92 Lili: 60, 75, 81, 70, 80, 81, 94, 67.5, 99, 98 John: 79,0, 74, 96, 88.5, 88, 0, 100, 86, 83 Jason: 89, 90, 90, 85, 85, 90, 91, 88, 100, 79 Write user-defined functions or build-in functions (e.g., sum, mean, max, min, etc.) to calculate: The Average Grade of each student; this average should be a vector. The average of the class; this average is a scalar vector. The highest grade among the Average Grade of Each Student The lowest grade among the Average Grade of Each Student Show a table with each student's name, average grade and letter score using A, B, C, D, F…
For questions 6-9, create a truth table for each statement. 6. A ⋀ ~B 7. ~(~A ⋁ B) 8. (A ⋀ B) → C 9. (A ⋁ B) → ~C
You may use the Boolean operator to search for data on two separate topics at once. To get the most relevant results, Kevin should utilize which of the following Boolean operators?

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