S
  1. study help
  2. subject categories
  3. computer science
  4. databases
  5. january 2021
  6. 31

Databases Questions and Answers January 31, 2021

Expert-verified solutions to help you succeed

Tyler would like to send his parents on a cruise for their 50 th wedding anniversary. He expects the cruise will cost $15,000 and he has 5 years to accumulate this money. How much must Lance deposit at the end of each year in an account paying 10 percent interest in order to have enough money to send his parents on the cruise? Pick the closest
image text in transcribed

Write a Calculatable interface that includes methods to calculate the following. (Do not overanalyze these methods!) The volume of a cube. The volume of a cube is determined by the length, height, and width. The volume of a cylinder. The volume of a cylinder is determined by the height and radius of a cylinder.

Which of the following is not one of the remote server administration tools ( RSAT )

can you plz explain hot to design database to mark the attendance of the student along with metadata using ppt Dhofar University 1. Fatima who is doing Bachelors is 18 years old, belongs to Salalah and her major is MIS. 2. Ali who is doing Diploma is 20 years old, belongs to Sohar and his major is Accounting. 3. Ameera who is doing Bachelors is 17

i need help with my programming assignment. i want to create a program in which when i click the button called "blur" the red frame area in the upper image is drawn with the image already blurred shown below. How can i achieve that? Here is my current code: import java.awt.BorderLayout; import java.awt.Color; import java.awt.Graphics; import
image text in transcribed

In point form , briefly describe five advantages of a database approach compared to a file processing system. In point form , describe the following 5 characteristics or implications of an attribute: Candidate Identifier, Composite, Multivalued, Required vs. Optional, and Surrogate.

In the code that follows, window is a / an Question Blank 1 of 1 type your answer... . window.prompt ( " Enter your name" ) ;

Assume the BL AVERAGE instruction begins at the location 0 x 0 0 0 0 0 4 A 8 and its machine code is F 7 FFFFF 0 . The subroutine AVERAGE begins at the location 0 x 0 0 0 0 0 4 8 8 .

Implement algorithm Predecessor(x, k). For k = 1 to 20, call Predecessor (x, k) where x is the root node of the tree from Part A. Output the value of the successor of k (may be null). (In Java Programming) Predecessor of a key Definition: The predecessor of a node x is the node with the largest key smaller than x.Key. TreePredecessor(x) if

In Java 6. // populates received integer array with received value // receives: array of integers, list, that will have all elements filled with received value // Example call #1: // Example call #2: // Example call #3: // signature of method: public static void fillArray(int [] list, int value)
image text in transcribed

design and algorithm class Question 9 Arrange the following functions in ascending order of growth rate. That is, if function gin) immediately follows function fn) in your list, then fln) = Olgln) . f (n) = 3" S2 (n) = store" Ign fs (n) = n? A (n) = nyn 5 (n ) = nz + n(Ign) to () - (0) " + 3 Question 10 Use formal definitions to show that: 3n 2n +
image text in transcribed

my first initial is N , and last 4 digits are 0997. use the LC-3 virtual machine/ simulator. this uses the LC-3 simulator. first initial is N, and digits are 0997. use this info to solve the steps required. the steps with examples are given Unit 5. AS1: Assignment Homework assignment. Overview: Load the Hexadecimal ASCII respresentation of your
image text in transcribed

Assign matchFound with true if the difference between firstSample and secondSample is within thresholdValue. Your Function function matchFound = IsMatch (firstSample, secondSample, thresholdValue) if abs (firstSample-secondSample): match= 1: else match = 0: end end Code to call your function IsMatch ((4/5), 0.8, 0.0001)
image text in transcribed

Question 2 In this task, you need to demonstrate the creation and usage of virtual machine using Debian OS A pet store chains WonderPet has purchased a server with 10 hard disks (each hard disk has a storage size of 2 TB). The server is installed with Debian OS, and it has an operational life of 3 years. The requirements for the storage space are
image text in transcribed

with one LAN, using the main branch of the bank as the hub, then we don't need to buy any new hardware at the new location other than supplying more computers for the employees, right? Materials on the right have been updated Yes, all we need to buy are desktop computers for the employees at the new location. That's not true ? ' Ve need to get a
image text in transcribed

Given the following tables: students(sid,name,age,gpa) courses(cid,deptid, description) professors(ssn,name,address,phone,deptid) enrollment(sid,cid,section,grade). cid makes reference to the courses table. teaches(cid,section,ssn). cid, section makes reference to the enrollment table Provide SQL instructions for each of the following questions

In Java 1. Create a class Point with coordinate (x, y, z). Calculate the distance between two points p1 and p2 by using the class Point. (30 pts) 2. Write a method that accepts two arguments into the parameters x and y. Assume x and y hold positive nonzero integers, the method should return the value of x times y. Multiplication can be performed

I / O tables are stored in _ _ _ _ _ _ _ _ Question 1 8 options: System database Main memory Processor registers I / O buffer

RUBY PROGRAMMING Develop a game, such as a board, adventure, word, or computer game.

In Java, Using the Die class defined in this chapter, write a class called PairOfDice, composed of two Die objects. Include methods to set and get the individual die values, a method to roll the dice, and a method that returns the current sum of the two die values. Create a driver class called RollingDice2 to instantiate and use a PairOfDice

java code please 50 points QUESTION 21 21. Write a Java program to show the following Create an interface called Vehicle. The vehide interface has 3 methods amely - Mileage NumberOfPassengers - VehicleName Create a class called Car which implements Vehicle interface. Write the implementation for the methods Mileage, NumberOfPassengers, VehicleName
image text in transcribed

SS Activity 3 AF . xIsx Histo Aid Data File 1 Data File 2 Dist 1 Dist 2 Dist Pics \ table [ [ ] , [ Process Data ] , [ 3 4 ] , [ 2 2 ] , [ 2 6 ] , [ 1 8 ] , [ 2 7 ] , [ 2 4 ] , [ 3 3 ] , [ 2 4 ] , [ 3 2 ] , [ 2 7 ] , [ 2 6 ] , [ 3 3 ] , [ 2 7 ] , [ 2 0 ] , [ 2 4 ] , [ 2 1 ] , [ 3 3 ] , [ 1 4 ] , [ 2 1 ] , [ 2 7 ] , [ 2 4 ] , [ 2 7 ] , [ 1 4 ] , [
image text in transcribed

For each question 50 word minimum. If you were on the jury for a murder or rape case, would you convict a defendant on the basis of DNA evidence alone? Why or why not? 168 CHAPTER 3 Organizing Textbook Information for Study Integrate knowledge While Reading Questions have been inserted in the margins to stimulate your thinking while read ing.
image text in transcribedimage text in transcribedimage text in transcribed

Write an assembly ARM program to store the smallest value of the three registers r0, r1, and r2 into register r3 .

Can anyone please help me with these? It's a computer networks course 1. What for is each of the following passwords used for: a. Console: b. Enable: c. VTY password: 2. What is a benefit of the MOTD message? 3. What are the three main command modes on the router or switch? 4. Why is it a must to configure IP addresses on a router but not switch?

Please provide code for all the fix me tasks. many thanks public class Q4Cypher { /** * Constructor for a cypher instance * @param key The key used by the cypher */ public Q4Cypher( int key) { // FIXME Question 4b: complete this constructor } /** * Determine whether the input string is well-formed according to the following rules: * - it must not

Let's assume that instead of the four tables in the database, we used just one table : 1 STUDENT ( StudentID , YearID, Year, GroupID, GPA, ID , Major ) JavaScript Why is this table not normalized? The table is not normalized because it stores repeated information such as Year, GroupID, and Major for each student, leading to data redundancy The
image text in transcribed

Many of the attacks discussed in this chapter involve exploitation of system resources while an application is running. When developing and testing the applications, who in the organization should be involved in testing for potential vulnerabilities?

Which of the following is a group of similar objects? objects properties and methods collections procedures

Give the transitional diagram and NFA five items to comprise an NFA for each of the below. Design an NFA to recognize the language consisting of the string 101. Design an NFA to recognize the language consisting of all strings beginning with 101. Design an NFA to recognize the language consisting of all strings ending with 101.

The ` treasuremap _ t ' struct is defined in the following location which shows its fields ( parts ) : - ( ) In the c file ` treasure _ main.c ' - ( X ) In the header ` treasure . h ' - ( ) In the header ` stdio . h ' - ( ) Trick question: the definition is read from the user typing

Show that f is continuous on (-\\\\infty ,\\\\infty ) .\ f(x)={(1-x^(2) if x1):} \ On the interval (-\\\\infty ,1),f is ] function; therefore f is continuous on (-\\\\infty ,1) .\ On the interval (1,\\\\infty ),f is function; therefore f is continuous on (1,\\\\infty ) .\ At x=1 ,\ \\\\lim_(x->1^(-))f(x)=\\\\lim_(x->1^(-))(,)= \ and\
image text in transcribed

In Visual Studios C#: class Program { static void Main(string[] args) { // declare two int variables and give them a value of your choice // declare two double variables and give them a value of your choice // see methods to create below // call your greeting method // call the product/square method, send it your int variables declared above //

In Java language, Write a program that reads a file consisting of students test scores in the range 0-200. It should then determine the number of students having scores in each of the following ranges: 0-24, 25-49, 50-74, 75-99, 100-124, 125-149, 150-174, and 175-200. Output the score ranges and the number of students. Run your program with the

Project B: Library Information System Overall description: Your team is employed by a university for the implementation of a computer system for the library and its borrowing facilities. Customer specifications: The implemented system should be able to handle the basic operations of a university library, including the following features: o It must

These questions are related to Visual Basic. Explain the difference between passing an argument ByVal, ByRef Write For Next loop to iterate items in ListBox or an Array Difference between function and sub routine? What is the Items collection and how does it relate to a list box and/or a combo box?

Question 2 (20 marks) Explain in your own words how data is passed between functions with particular reference to parameter passing by value and by reference. Use example to illustrate your
image text in transcribed

What are the requirements ( criteria ) must an account ( code ) meet before it can be deleted?

Write an R function prism(df, decisionAttributeIndex) that applies the Prism algorithm to the dataset specified by the dataframe df where decisionAttributeIndex is the (1-based) index that corresponds to the decision attribute in the dataframe df. The function should output the rules that are found. Show that your function works by running it on
image text in transcribedimage text in transcribed

In - Class Activity 0 4 Write a FORTRAN program to calculates multiplication of matrix A by B by C . The A and B metrices are given here. Matrix C is a 4 3 matrix and your program should will receive matrix C from the keyboard entry row by row. A : = ( [ 1 , 3 , 5 , 7 , 9 , 1 1 , 1 3 , 1 5 , 1 7 , 1 9 ] , [ 2 0 0 , 1 9 0 , 1 8 0 , 1 7 0 , 1 6 0 ,
image text in transcribed

1. Perform the following binary multiplication. Assume that all values are signed 2s complement numbers. 1101 * 0101 2. Perform the following binary division. Assume that all values are unsigned numbers. 10011011 / 111
image text in transcribed

Professor Dumbledore has decided to finally modernize the security at Hogwarts and wants to replace charms with security ID cards used at all entrances. He also wants to give everyone a user ID to access the new computer network at the school. Dumbledore wants to assign access to different locations based status as either a faculty member or

please show your work and do it completely for thumbs up! Instruction eax FFFFFEFF inc eax inc al dec al inc ax dec ax inc eax inc eax Hexadecimal multiplication is like decimal multiplication. However, using hexadecimal symbols. For example 123 x 45 615 +492 5535 Now, perform the following multiplication in hexadecimal and show your work like the
image text in transcribed

Why is exception handling useful? Is it more useful to throw a customized exception instead of a general exception? Why/why not? Do you need to consider performance implications when using "try/catch"? Is exception handling the best way to deal with programmatic errors? What are the alternatives?

Which is the most important tag for SEO? Keywords Description Heading Title
image text in transcribed

5. Matrix search: Write a program to take an integer value and a matrix as input. Your program searches for the given integer value in the matrix. If it finds the number, it will display an informative message specifying the row and the column of the number. If it doesn't find the number, it will display a 'not found message. Please use these
image text in transcribed

When a programmer wants the program to display text information on the computer screen, she uses the keyword

Write a complete java program that can be executed in the terminal with the command java Midtermi filename where filename will be the actual name of a text file that contains a table of numbers in the following format: rows 4 cols 3 12 -7 9 3 14 21 50 -8 3 2 10 The first two lines state the number of rows and columns of the table that follows. You
image text in transcribed

KING - DREAMS - I Once upon a time, a King saw a dream, where if his kingdom has food line of tanks. meaning tanks lined up side by side in a certain way, they will become invincible. Now, since you are the advior of the king, he has asked you to create a good line of tanks. There are " types of tanks, numbered i through m , and we have infinite
image text in transcribed

Write the pseudocode for the scenario below. A teacher has a class of 10 learners who recently wrote a test. The teacher would like to determine the average class mark and the name of the student with the highest mark. Verify that the marks input by the teacher fall in the range 0 to 100. For any mark input that is outside of this range, the user

How many memory locations can be addressed with a 3 2 bit address bus? You may answer in hex / decimal / a power of two.

Assume that you are designing a simple text editor (like Notepad) that supports inserting text, copy, paste and editing for any size file (including book-length files). Between the String objects and StringBuffer objects, which one is more appropriate and why? String, because StringBuffer is read-only String, because it will execute more
image text in transcribed

Using Python. Build both Decision Trees and kNN models to gain insights about possible features that can help us predict diabetics. this one is open ended. Pregnancies: Number of times pregnant Glucose: Plasma glucose concentration over 2 hours in an oral glucose tolerance test BloodPressure: Diastolic blood pressure (mm Hg) Pregnancies Glucose

Assume the following register contents: $t0 = 0xAAAAAAAA, $t1 = 0x87654321 For the register values shown above, what is the value of $t2 for the following sequence of instructions? (2 points) sll $t2, $t0, 6 or $t2, $t2, $t1 For the register values shown above, what is the value of $t2 for the following sequence of instructions? (2 points) sll

Do not copy. I need all the steps answers. It is urgent. Thanks in advance. Project: Medical Consultant and Doctor Booking App Your company will introduce to the market a new type of Device/Equipment/Vehicle (Car, Aircraft, Ship) that will incorporate state of the art technology. You are the Project Manager for this project. As part of your
image text in transcribedimage text in transcribed

Rewrite the following Scheme function in standard ML: (define (Fib n) n ; base case: if n , then return n (+(Fib(-n1))(Fib(-n2))); recursive case: otherwise, return Fib(n-1)+Fib(n-2) )
image text in transcribed

Decision or Selection Structures and Loops ( Decision Tree: If - else if - else loop ) The charges for Wireless for one of the mobile companies is given in the following table. Use if else if else decision structure. Plan Allowed Data Per User Monthly Charges per user Plan 1 5 Less than 1 5 GB $ 1 4 . 9 9 Plan 2 5 Less than 2 5 GB $ 2 4 . 5 0 Plan

Question 4 (6 points) How many times will the following do-while loop be executed? int x = 11; x += 20; } while (x > 100); Give error Infinite loop Oo 1
image text in transcribed

Problem 9 Find the 0 complexity of the following program. You should estimate the running time equation of the program first. Hints: Input size can be more than one variables. Typically, we only use 1 variable (n) in the running time function, T(n). .O is the upper bound. Use inequality instead of equality. # # Input: A, B are lists of numbers; z
image text in transcribed

You are to write a class called Binomial that will allow creation and handling of univariate binomial polynomials, as described below. Binomial Description Each binomial object has following properties: Each binomial determined two coefficients and two variable exponents. Binomial power is always positive. Binomial power is always integer.

Implement cube. py ( 1 point ) This program will first ask the user to enter an integer representing the side length of a cube. It should then compute the volume and surface area of the cube, and print them out on separate lines. For a given side length: The volume is the side length cubed The surface area is 6 times the side length squared ( as a
image text in transcribed

is the use of the Internet to send or post content intended to hurt or embarrass another person. Zombie apocalypse Cyberbullying Trojan horse attack Identity theft
image text in transcribed

Find T(n) of the following code segments: a) 1. for it1 to n 2. for jf1 ton 3. afa+i+j; T(n)= b) T(n)= 1. k+1; 2. while k
image text in transcribed

Which of the following statements are true for HTTP and HTTPS ? HTTP is a more secure protocol than HTTPS . HTTPS uses symmetric and asymmetric encryption for secure communication. HTTP uses symmetric and asymmetric encryption for secure communication. HTTPS uses only asymmetric encryption for secure communication.

Write a function hey that takes a number as a parameter, squares it , and outputs the parameter squared: Example call Returns hey ( 5 ) 2 5 hey ( 0 ) 0 hey ( - 3 ) 9

A. Virtual center can be considered as consumption agent, explain. B. while working on Humber cloud, you need to modify your VM memory allocation, you will perform this activity in Humber cloud UI. can you identify workflow steps for this activity (how this request will be completed - list down all the steps) need help answers for this data center

(25 points) Consider a lonic functoon with three inget, X,Y,and Z and cee iegit F. F is true if an odd mamber of inpats are true. F la also true if beth Y and Z arv trie a) Ful in the trith table belones: b) Write the Frodact of Sim (16o5) aed Sum ot Prpdurt (Foli) ofte (xeadont seed to simplify3) c) the KMap to vivulise the abore truth talle.
image text in transcribed

1. There is now a reasonable range of publicly known stream ciphers. Provide examples of (and ideally some information about) some publicly known stream ciphers which are either published in international standards and/or adopted by commercial applications. 2. Both Triple DES and the much weaker Double DES are subject to attacks known as

2.11 Write the 8-bit signed-magnitude, two's-complement, and ones'-complement representations for each decimal number: +25, +120, +82,-42,-6,-111
image text in transcribed

Use the Greedy algorithm for the solution of the following Fractional Knapsack problem: Item 3 Item 1 2 kg $100 Item 2 3 kg $150 Item 4 Item 5 5 kg $100 $200 knapsack capacity 9 kg 1 kg $30 1 kg
image text in transcribed

In your own words, describe what you think the relation ship between a PRODUCT Operation and an SQL Join Operation.

A company tried implementing an ERP system and failed. Which of the following is the m likely reason for its failure? lack of preparatory training lack of security lack of integration unsuitability for small or medium businesses
image text in transcribed

required for me : 1- context diagram level 0 With data stores. 2- context diagram level 1 With data stores. Lab - 5 Objectives To gain an extensive understanding of data flow diagrams and its components To design system with context and level-O diagrams To develop knowledge in system development Exercises The lab instructor will explain the
image text in transcribedimage text in transcribed

Question 4 7.14 pts What is NOT a step in handling a page fault age fault schedule a write operation for the page that needs to be swapped out O check the address reference to see if it is valid or not O update the page table entry with the frame number after the page read operation (from the swap device) completes find a free frame
image text in transcribedimage text in transcribed

Describe the pros and cons of reliable protocols

Submit the algorithm in pseudocode ( or any computer language ) minimize vector x using gradient - based optimization: f ( x ) = 0 . 5 * * | | A * * x - b | | | | 2 , where A , x , and b are some vectors. Explain, in short, each line of the pseudocode.
image text in transcribed

I need an explanation of how the arrows was placed in detail , step by step can be made by adding Now let us look at the algorithm Lamport proposed for as events. Consider the three processes depicted in Fig. 6-9(a). The processes run on different machines, each with its own clock, running at its own speed. As can be seen from the figure, when the
image text in transcribed

Assume we have the following declarations: int i 2, j - 3; double u = 2.5, V = 10.0; For each of the statements below (assume all statements are executed independently), determine what the value and data type of the evaluated expression is. Expression Value Data Type 7 + j*i 2.0 3 / 3 3/ (int)* 100.0 10.0 * (int) (i/v) v/ (int) 1 + "789" + 1 + 2 1
image text in transcribedimage text in transcribedimage text in transcribed

Problem) 1) Design a PayRoll class that has data members for an employees hourly pay rate and number of hours worked. 2) Write a program with an array of eleven PayRoll objects. 3) The program should read the number of hours each employee worked and their hourly pay rate (before tax) from a file and call class function to store this information in

(Answer the following questions with SQL statement) (1) Suppose a student with student id 88888 wants to take a course SEEM9999. Write a query to check if the student has taken all its prerequisites (directly and indirectly) already. (2) For all students, show student id, student name, and all the course ids if a student has taken the same course
image text in transcribed

How might one find a receptive market in Quantum Computing?

getEmployeesByManager(manager) Function This function will provide an array of "employee" objects whose employeeManagerNum property matches the department parameter (ie: if manager is 14 then the array will consist of only employees who are managed by employee 14 ) using the resolve method of the returned promise. If for some reason, the length of

Consider the following Java code below: public class Example { public static void main(String (jargs) { String line - "We are writing a code in Java"; String str =/* string */; int pos - line.indexOf(str); System.out.println(line.substring(e, pos) + str); > } Which of the following should we use to replace /*string*/ so that the output is: We are
image text in transcribed

I am running some benchmarking code from the SPEC CPU 2017 suite. The code I am particularly interested is the omnetpp, which has a total of 2.389 x 1012instrctions. I am running this code on the latest Intel Core i7 processor. The execution time of the omnetpp program on this processor is 750 seconds. a) Find the CPl if the clock cycle time is
image text in transcribed

explain this system design part called procces dfd . explain it in a way that i can dumbfiy this in words to a client who wouldn't know about this diagram. also give me questions i can ask about this diagram to the client for further clarification Sacred Seeds Holistic Health Process DFD ) Monthly Time Trigger Triggers 4 . 1 below From bookkeeper

The physical layer in the ZigBee protocol stack is responsible for the power state of the transceiver

There are 30 coins. While 29 of the coins are fair, the 30th coin flips heads with probability 60%. You flip all 30 coins 100 times. Use the Monte Carlo method to compute within 0.1% the probability that the 30th coin is in the set of 10 coins that land heads most often. (Basically, count each time the value for the 30th coin in within the 10th

Course: Data structures and algorithm b. A constructor that is passed both a first and a last name. c. get() and set() methods for the instance variables. d. A toString() method. e. An equals() method. Two instances are equal if they have the same first and last names. f. A compareTo() The method should compare using normal alphabetical order.

How to draw bar graph using user input in python turtle

what is the difference in HIPS and NIPS in cyber security

*** I do not want Anonymous to answer. I have seen three different questions that he has answered with the same program which is wrong.*** Read the reference at http://www.nongnu.org/avr-libc/user-manual/pgmspace.html and http://www.nongnu.org/avr-libc/user-manual/group__util__crc.html Make a program to calculate CRC-16 of the code in program

Programming Language: Java Programming Environment: Eclipse Complete the program by implementing the Prims algorithm solution. A priority queue (pq) has been included to minimize the anxiety that can be caused by this assignment. Refer to Greedy algorithms for the pseudocode for Prims algorithm. The program expects one input: Graph with the

QUESTION 8 Ammatar A . 1 . 5 Ohms B . 1 . 7 5 Ohms C . 2 . 0 0 Ohms D . 2 . 2 5 Ohms E . 2 . 5 Ohms
image text in transcribed

Create a program called Bagel BonusYourLastName. A bagel shop offers awards coupons depending on how much a customer spends on bagels per month. For example, if you spend $50 in one month, you will get a coupon worth five percent of that amount to use during the next month. The following table shows the percent used to calculate the coupon awarded

C++ object oriented programming question. You are to write a class called Binomial that will allow creation and handling of univariate binomial polynomials, as described below. Binomial Description Each binomial object has following properties: Each binomial determined two coefficients and two variable exponents. Binomial power is always positive.

How many layers are in an OSI model? choose 1 and discuss the benefits and purpose of it .

Where would you categorize the cloud computing benefits that include decreases in hardware, maintenance costs, and software upgrades? Increased computing power Increased storage capacity Increased information security Decreased maintenance issues v 8 . 0 1 0 3 - 3 1 - 2 0 2 2
image text in transcribed

1. (30 points) Assume you have a linear page table used in a system with 32- bit memory addresses and processor. Each Page Table Entry (PTE) has a size of 4 bytes (virtual page number, metadata and access permissions), and the page table starts at physical address 0x04000400. Also assume we use a 4KB page size. Find the following: A) The starting

Which of the following is the best definition of "forensics"?
image text in transcribed

state the evolution of the programming language ada with year specified

Showing 300 - 400 of 1502
  • 4 / 16