2. The following relational schema form a university database which is implemented in a relational database: student (s_ID, s_name, semester, year) department(d_ID, d_name, floor) course (c_code, c_title, d_ID, credits) Write down the Relational Algebra for the following queries: a) Find your own name using your own registration number as the student ID. b) Show the ID and name of the department located at the floor number equals to the last digit of your own registration number. c) Find the codes and titles of the courses having credits more than 3 credits. d) Find the name of all students from your own semester and year.

Q: cons: arity mismatch; the expected number of arguments does not match the given number expected: 2…

A: According to the information given:- We have to follow the instruction mentioned in order to…

Q: Q2) Write a relational algebra expression that returns food items that are sold at "Aldi" and their…

A: The answer is given in the below step

Q: 7. Same constraint graph as in the previous question. However, instead of running the AC-3…

A: Budget line(BL) is a downward-sloping line showing a tradeoff between the two goods. A budget line…

Q: Test Case 2 Enter five names \n Enter friend 1 \n Jerry ENTER Enter friend 2 n Elaine ENTER Enter…

A: According to the provided information: We need to create a program that takes five names. Output…

Q: Ineed help to create a nested formula in cell B17 with the IF and SUM functions that check if the…

A: For the solution of this inquiry let us take an example of relevant datasheet as below : Suppose…

Q: Computer Science * IN SQL* Write an SQL statement that selects all customers with a city starting…

A: selects all customers with a city starting with any character, followed by "land".

Q: The steps required to construct an ADT. Please complete the following sentences with your answer.

A: Introduction: The ADT merely outlines which procedures must be carried out; it makes no mention of…

Q: The steps required to construct an ADT. Please complete the following sentences with your answer.

A: Launch: The ADT merely outlines which procedures must be carried out; it makes no mention of how…

Q: What does it mean for an argument to be valid? Should we expect inductive arguments to be valid? Why…

A: Answer:-   An argument is legitimate if the fact of all its premises forces the conclusion to be…

Q: The steps required to construct an ADT. Please complete the following sentences with your answer.

A: Introduction: The ADT does not specify how the procedures should be carried out; it only specifies…

Q: The steps required to construct an ADT. Please complete the following sentences with your answer.

A: The ADT merely outlines which procedures must be carried out; it makes no mention of how they should…

Q: The followingshows combinations of the values true andfalse connected by a logical operator.…

A: Result of the combination True and false are the two main combinations. These two values are…

Q: QUESTION 25 Write conditional expression(ternary operator) that returns -1 or 1 randomly.

A: #include <iostream> using namespace std; int main(){    int max;   max = 1000; //set the upper…

Q: Which of the following is a negation for "All dogs are loyal"? (Select all that apply.) All dogs are…

A: Let's break down the original statement and the negations:Original Statement: "All dogs are loyal."

Q: The steps required to construct an ADT. Please complete the following sentences with your answer.

A: Answer:

Q: p.77, icon at Example 6 #4. Determine whether this argument is valid by using a truth table: I play…

A: Approach to solving the question: Detailed explanation: Examining historically:(i) For the…