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Suppose X is the set of all people who are enrolled in FIT1058. Let A be the proposition “Hermione is enrolled in FIT1058”.

Which of the following statements would not be equivalent to saying that “Hermione is not enrolled in FIT1058”?

$\neg X$ \neg X

Hermione $\notin X$ \notin X

$\neg A$ \neg A

Hermione $\in \overline{X}$ \in \overline{X}

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Suppose P and Q are both variables with the value False.

Which of the following expressions evaluates to True?

$\neg P \wedge Q$ \neg P \wedge Q

$P \wedge Q$ P \wedge Q

$P \vee Q$ P \vee Q

$\neg P \vee Q$ \neg P \vee Q

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Which SQL function is used to calculate the total number of rows returned by a query?

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Let P be the proposition “All pizzas should have good toppings” and Q be the proposition that “Pineapple is a good pizza topping”. How would you express in propositional logic that “All pizzas should have good toppings, but pineapple is not a good pizza topping”?

$\neg P \wedge Q$ \neg P \wedge Q

$\neg P \vee Q$ \neg P \vee Q

$P \wedge \neg Q$ P \wedge \neg Q

$P \vee \neg Q$ P \vee \neg Q

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If X is the proposition “It will be sunny tomorrow” and Y is the proposition “It will be sunny the day after tomorrow”, then $X \vee Y$ X \vee Y could be described as:

It will be sunny both tomorrow and the day after.

It will not be sunny either tomorrow or the day after.

It will either be sunny tomorrow, or the day after, but not both.

It will either be sunny tomorrow, or the day after, or both.

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You are tasked with ensuring that only authorized personnel can query specific security-related tables. What should you use?

3. Rely on encryption to protect sensitive columns

2. Use a WHERE clause to restrict access

4. Use GROUP BY to filter rows based on user roles

1. Implement Role-Based Access Control (RBAC) within the SQL database

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Which of the following is not an example of a proposition?

The backbone of any proof consists of its logical deductions.

The cheque is in the mail.

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GIVEN A TABLE CONTAINING ASSIGNMENT SCORES OF STUDENTS IN A CLASS. CHOOSE A PYTHON CODE THAT RETRIEVE 3 ROWS IN A DATASETBOXSCORE.CSV

DF1 = DF.HEAD(3)

DF3 = DF.LOC[[0, 1, 2]]

DF2 = DF.ILOC[0:3]

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Which of the following sets of values could easily be modelled using Boolean variables?

The speed limit on all major roads in a particular city.

Whether or not it rained on each day in the last month.

Students’ scores on a final exam.

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In Pandas, how do you write a DataFrame to a CSV file?

save_csv(df, 'file.csv')

export_csv(df, 'file.csv')

df.to_csv('file.csv')

df.write_csv('file.csv')

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