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Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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
Transcribed Image Text:True or False: The following two statements are logically equivalent:
"There is someone who either plays basketball or hockey."
"Either there is someone who plays basketball or there is someone who plays
hockey."
True
False
Expert Solution
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.Similar questions
- What is a logical expression? - An expression that evaluates to true or false. - An expression that evaluates to true. - An expression that evaluates to false. - An expression that contains at least one mathematical operation. Which one is the correct choice?arrow_forwardWrite multiple if statements: If car_year is before 1968, print "Probably has few safety features." (Without quotes). If after 1970, print "Probably has head rests." If after 1991, print "Probably has anti-lock brakes." If after 2001, print "Probably has airbags." End each phrase with period and newline. Remember that print() automatically adds a newline. Ex: car_year=1995 prints: Probably has head rests. Probably has anti-lock brakes. 1 car_year int(input()) Your code goes here 2345 Check = Next 1 wwwarrow_forwardSymbolize the following argument and then determine if it is valid or invalid. Everything is physical. Therefore, it is not the case that there is something which isn’t physical.arrow_forward
- Let p be “It is raining" and let q be "It is snowing". Translate each of the following logical expressions into English statements. 1. -p V ¬q 2. рла 3. тр — д 4. р 9 5. -parrow_forward1. Consider the following statements: DATAENDFLAG is off; ERROR equals 0; and SUM is less than 1024. Express the following sentences in symbolic notation: (i) DATAENDFLAG is off, ERROR equals 0, and SUM is less than 1024. (ii) (iii) (iv) DATAENDFLAG is off but ERROR is not equal to 0. DATAENDFLAG is off; however, ERROR is not 0 or SUM is greater than or equal to 1024. Either DATAENDFLAG is on or it is not the case that both ERROR equals 0 and SUM is less than 1024. (v) If DATAENDFLAG is off and SUM is less than 1024, then ERROR equals 0.arrow_forwardConvert the following if statements into a switch statement:if (time == 0){greeting = "Good morning";}else if (time == 1){greeting = "Good day";}else if (time = 2){greeting = "Good evening";}else if (time == 3){greeting = "Good night";}arrow_forward
- Program Unit Score Calculator Console App Write a Python Console Application program that allows the user to enter the marks for different assessments in a unit, and computes the total mark and grade for the unit. Here is the program logic specification: There are six assessment activities Quiz1, Quiz2, Quiz3, Quiz4, Lab Journal, Major Assignment and Final Exam. The four quizzes are worth 5 marks each, the Lab Journal is worth 10 marks, the Major Assignment is worth 30 marks and the Final Exam is worth 40 marks. The algorithm for computing the total mark for the unit is: Total Mark = Quiz1+Quiz2+Quiz3+Quiz4+Major Assignment+ Lab Journal + Final Exam The following screenshot shows a successful test run:arrow_forwardLet A, B, and C be the following statements:A Roses are red.B Violets are blue.C Sugar is sweet.Translate the following compound statements into symbolic notation.a. Roses are red and violets are blue.b. Roses are red, and either violets are blue or sugar is sweet. c. Whenever violets are blue, roses are red and sugar is sweet.d. Roses are red only if violets aren’t blue or sugar is sour.e. Roses are red and, if sugar is sour, then either violets aren’t blue or sugar is sweet.arrow_forwardIndicate whether or not the following is a valid Java statement. Whenever the statement is invalid, briefly explain why. int count- 12.567:arrow_forward
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