S
  1. study help
  2. subject categories
  3. computer science
  4. databases
  5. may 2020
  6. 06

Databases Questions and Answers May 06, 2020

Expert-verified solutions to help you succeed

class Bag: def __init__(self): """Initialize an empty bag. >>> bag = Bag() >>> bag [] """ raise NotImplementedError("__init__ hasn't been implemented.") def __str__(self) -> str: """Return a string representation of this bag. >>> bag = Bag() >>> for x in [1, 2, 3, 4]: ... bag.add(x) ... >>> str(bag) '[1, 2, 3, 4]' """ return str(self._items) def
image text in transcribedimage text in transcribedimage text in transcribed

(12 points) How many 5-element DNA sequences (a) end with A ? (b) start with T and end with G ? (c) contain only A and T ? (d) do not contain C
image text in transcribed

Write a Prolog source file take.pro as follows. Be sure to follow the Coding Standards. Your file should define the predicate take/3. Predicate take should take arguments as follows: take(+n, +x, ?e). The idea is that n is a nonnegative integer, x is a list, and e is a list consisting of the first n items in x, or all of x, if x has fewer than

algorithms find the 13th smallest median element in array Example 8, 33, 17, 51, 57, 49, 35, 11, 25, 37,14, 3, 2, 13, 52, 12, 6, 29, 32, 54, 5, 16, 22, 23, 7 The median is the kth element = K = 25/2 = 13th in sorted list
image text in transcribed

Question #4: Student's Mark Hamed is a student of Diploma 200 year at UTAS-IBRA. He has taken 5 courses in a semester. He is interested to know his total marks in the semester and the average score. Help him to calculate the required details by writing a Java program
image text in transcribed

a . ) A Program consists of 5 0 0 0 floating point instructions and 2 5 0 0 0 integer instructions. Processor has a clock rate of 2 . 0 G H Z . Floating point instructions take 6 cycles and integer instructions take 2 cycle. How long does it for this processor to run the program? And calculate the average CPI. ( DO NOT USE CHATGPT ) b . ) Which of
image text in transcribed

The function Cyclic is intended to check whether a given undirected graph is cyclic. function CYCLIC((V, E)) mark each node in V with 0 count = 0 for each v in V do if v is marked with 0 then cyclic + HASCYCLES(V) if cyclic then return True return False Dw is v's neighbour function HASCYCLES(V) count + count + 1 mark v with count for each edge (v,
image text in transcribed

What is the purpose of updating the Requirements Traceability Matrix ( RTM ) ? Question 4 options: To document known defects To track the relationship between tests and requirements To provide a phase - wise summary of test activities To identify automation candidates

java program Basic Procedures You must: Have code that compiles with the command: javac *.java in your user directory Have code that runs with the following command for part 1: java BoxUsageDemo Have code that runs with the following command for part 2: java AppleOrange [number] You may: Add additional methods and variables not specifically

Implement a Priority Queue for strings. A priority queue is similar to a regular queue except each item added to the queue also has an associated priority. For this problem, make the priority an integer where 0 is the highest priority and larger values are increasingly lower in priority. The remove function should return and remove the item that
image text in transcribed

QUESTION 1 Is often possible to define overloaded operators by calling other overloaded operators.. True False
image text in transcribed

What is spyware? A computer attack where an attacker accesses a wireless computer network, intercepts data, uses network services, and / or sends attack instructions without entering the office or organization that owns the network. Experts in technology who use their knowledge to break into computers and computer networks, either for profit or
image text in transcribed

Ethernet (overview, communication, application, devices, examples of Ethernet networks, etc.) It is simple no need more information

A block of substance has a width of 4.4cm , a length of 13.2cm , and height 7.1cm . Its mass is 1.62kg . Calculate the density of the substance.\ Enter a numerical answer only in terms of (g)/(c)m^(3) . A block of substance has a width of 4.4cm, a length of 13.2cm, and height of 7.1cm. Its mass is 1.62kg. Calculate the density of the substance.
image text in transcribed

Jacob Woodltef Device Tips X Exit 5 a select all A Connect parts of the CPU to each other B Buses link only one specific component on the system board The number of bits that can travel c . simultaneously down a bus is known as the bus width. D A bus is a pathway for bits representing data and instructions
image text in transcribed

In our final ALU design shown below, we specified Op values for the six operations that we aimed to implement. But, with the existing logic, we can actually do more operations just by entering corresponding values to Op input. Find the proper Op values for the operation:s specified in the table below. Fill the values to the Op column of the table
image text in transcribed

In the unit 1 assignment, we defined the relations and keys for a library system. In unit 2 we learned about constraints. For your unit 2 assignment, identify and describe the constraints that would be appropriate for the relations that we have within our library system. Constraints that you should consider may include: Entity integrity constraint
image text in transcribed

A language is regular if Group of answer choices none of the listed answers there exists an FNDA for it there exists a transducer for it the language is finite

I'm using Java on notepad++ trying to compile my program but i cannot get it to through the directory I need help using the directory to run my program. Also I need help writing a program in Java with asking a question and responding to the question. For example: what is your name ? Lady Z what is your favorite color? Green Where are you going ?
image text in transcribed

Python list = ['abccbccbpb'] length = 4 Write the new function `substring(list, length)` that returns the substring of the length that happens the most number of times within the list The return result I want is 'bccb'

Question 4 Few changes have been made to the SSMS requirements since the last meeting. After being registered by the System Administrator, Principal should firstly activate his account using system generated key. Thereafter, the system should respond with activation message (e.g. Success or failed). Assuming that the message was "success", the
image text in transcribed

Question 2 (50 pts) A local organization has several parking lots, which are used by staff. One of your high school friends, Taylor, was assigned to create the conceptual schema for the organizations parking lots. But apparently, Taylor did not think conceptual schema design was important, missed the classes, and now needs your help. Below are the

Explain and draw the architecture of web-based data warehousing

The following tables are for bookstore database. A book is written by one or more authors and is published by one publishing company. Each book has one title but it can have multiple formats (such as digital, paperback, hardcover). Price of the same book but different book format can be different. A book is uniquely identified by an ISBN. The
image text in transcribed

Express the followings in term of parallel computing: 1. Power wall 2. Instruction level parallelism wall 3. Memory wall Express the followings in your own words in term of parallel computing: 1. Power wall 2. Instruction level parallelism wall 3. Memory wall
image text in transcribed

Calculate the approximate absolute error incurred in representing the number 2 x 2 1 5 0 and 3 x 2 1 5 0 as single precision floating - point numbers. Comment your results.

Write a program that reads students scores, get the best score, and then assigns letter grade for each score based on the following rule: Grade is A if score is >= best score 10 Grade is B if score is >= best score 20 Grade is C if score is >= best score 30 Grade is D if score is >= best score 40 Grade is F otherwise. The program prompts the user

Consider the following block of code: In the above code, do line 3 and line 11 have the same frequency of execution? In the code above, 0 first In the code above, is the frequency of execution of line 7 (n)? In the code above, is the best-case runtime O(n)? Is it (n)? In the code above, is the worst-case runtime (n)? In the code above, is the
image text in transcribedimage text in transcribed

Question No: 0 3 This is a subjective question, hence you have to write your answer in the Text - Field given below. design specialists sit next to each other, how many seatng arrat Options Upload Answer Sheet Using - Mobile View Uploaded Images
image text in transcribed

answer all Question 1 (20 Marks) In all your diagrams in this section, please indicate the operating speed and duplex mode of the different links. (a) With the help of appropriate diagrams, discuss any two limitations of Computer Networks based on shared medium. [2 Marks] (b) What is the value of slot time and maximum network diameter in the (1)
image text in transcribed

Description: You have been asked to build an admin portal that will allow your company internal employees to access the portal and perform admin functions on behalf of company clients. Here are additional details: (a) Application is accessible only on company network. (b) Access to the links is role based i.e. only authenticated internal admins

Post 4 to 6 paragraphs on the topic to the week 4 discussion forum by Wednesday evening. Discussion Question week 6: Discuss the following topics on methods. Provide examples where necessary to elaborate your thoughts. Select two of these topics to discuss. What is the purpose of the call stack and how are methods handled with relation to the call

Q5 Complete a Simulation table for checkout counter using the Event Scheduling Time Advanced algorithm for below given table. Service Time Inter-arrival Time Arrival Time Time Service Time Service End begin 3 5 5 3 4 2 3 1 3 3 The simulation is scheduled to stop at time 60 Clock System State Future Event List LQLS()
image text in transcribed

According to the Systems Theory, a stylist at Styled Right hair salon would be a ( n ) : Multiple Choice input environment none of the above output
image text in transcribed

You will write a very basic web application in PHP that will create a dynamic search form. The PHP script will take user input from the form and perform basic searches on files local to the webserver. Searches will involve JSON objects stored in those files. Your project will create an HTML form with five fields. The field I need help with is

an introduction to programming with c + +

please answer. second picture js the FourierDerivativeMatrix 3. Here we approximate f'Gr) for a periodic function f(x) defined on (0,2) using a nodal Fourier method (please don't worry if you have never heard of such). Define a grid of r values via Id = 29 (k-1)/N for k=1,2,....N. Assume throughout that N is an even integer. Define a column vector
image text in transcribedimage text in transcribed

Num= 235.22 print( math. Ceil( num))

Write a java program in netbeans or eclipse that reads a sentence as input and converts each word to Pig Latin. In one version of Pig Latin, you convert a word by removing the first letter, placing that letter at the end of the word, and then appending ay to the word. Here is an example: English: I SLEPT MOST OF THE NIGHT Pig Latin: IAY LEPTSAY

Programming Assignment # 2 Write a program that outputs a downwards facing arrow composed of a rectangle and a right triangle. Arrow dimensions are defined by user specified arrow base height, arrow base width, and arrow head width. Note: this program is designed for incremental development. Complete each step and submit for grading before

The 1959 ARDC Model Atmosphere has the following parameters: Sea level temperature 288.16 K Sea level pressure 101.325 kPa Sea level density 1.2250 kg/m^3 Gradient layer -0.0065 K/m up to 11 km Isothermal layer 11 km to 25 km Gradient layer 0.0030 K/m up to 47 km Isothermal layer 47 km to 53 km Gradient layer -0.0045 K/m up to 79 km Isothermal
image text in transcribedimage text in transcribed

You have been selected to be a contestant on the new game show called "Get Lucky, Win Money". Here's how the game works. The playing board consists of four squares labeled A, B, C, D (see diagram below). The game consists of a series of rounds. In each round you select one of the squares, the possible "prizes" under the squares are $10000, $5000,
image text in transcribed

The _ _ _ _ _ _ _ process is assigned as the parent to orphan processes. Group of answer choices systemd / init zombie renderer main ( )

Use the rail fence Cipher (3 rails) to encode the following plaintext Plaintext: We are going to university every day

In what network topology are devices daisy - chained together in a single line?

Whats true about coding paradigm in php

Microsoft Windows is an example of which component of an information system? It is an application, which is part of the hardware component. It is an operating system, which is part of the software component. It is an operating system, which is part of the hardware component. It is an application, which is part of the software component.
image text in transcribed

Which tool helps build AI apps in seconds using existing prompts and GPT - 4 ?

Please Explain, Thanks :) QUESTION 2 Consider the regular expression (a+b)'(cd)b Which of the following strings is a part of the regular expression ? O abacd O abababcb O abababc
image text in transcribed

Instructions The files provided in the code editor to the right contain syntax and/or logic errors. In each case, determine and fix the problem, remove all syntax and coding errors, and run the program to ensure it works properly. DebugFourteen2.java // Displays list of payment options // - credit card, check or cash // Displays fee for using each

7. Consider the following statements: int numl, num2, num3 double length, width, height double volume numl 61 num2 71 num341 length 6.21 width 2.3 height 3.4 and the function prototype: double box (double, double, double) 1 Which of the following statements are valid? If they are invalid, explain why. (4) a. volume box (length, width, height) b
image text in transcribed

A. Given the network address of 172.16.5.0/19. i. How many subnets are available? ii. What is the network address for the subnet? What is the broadcast address for the subnet? iv. What is the Usable Host IP Range? Analyse the address as public or private V
image text in transcribed

What did I do wrong? This is ZyBook MIPS homework. It would be great if you guide me step by step and point out what I did wrong. Thankss Shifting a positive integer left by i bits gives the same result as multiplying the same integer by 2i. N2i=N>i Given an integer N stored at memory address 5000, write a program that stores the result of N8 at
image text in transcribedimage text in transcribed

Modeling Basics~ College Park Apartment Rentals General Instructions Read the Case Description below. Once you understand the case start formulating your entities and attributes. You can draw these out on paper as a rough draft and then transfer them to LucidChart. There is a template in LucidChart that you can use for this assignment if you want.

Consider the instructor relation, as depicted in Figure A . 5 on page 1 2 9 3 , as well as thedepartment relation, as depicted in Figure A . 3 of page 1 2 9 2 in Database System Concepts, 7 thEdition, 2 0 2 0 , Avis Silberschatz, Henry F . Korth, S . Sudarshan.a . All instructors who do not work in the Taylor building are going be given a 5 %
image text in transcribed

This problem concerns a standard deck of 52 cards. A hand consists of 4 cards. (a) How many hands contain 3 cards of one kind and the other of a different kind (for example, ace of spades, ace of diamonds, ace of clubs, and ten of spades)? (b) How many hands contain at least a card from each of the suits? (c) How many hands involve cards from at

Part 2. Need help with C PROGRAMMING question. Already completed the first couple of sections but need help with the rest. View the attached photos (which include example output to the right of main code) for reference. C main.c >
image text in transcribed

Consider the following variable - length code for the following six letter alphabet: \ table [ [ Symbol , \ table [ [ Binary ] , [ Code ] ] ] , [ a , 1 0 1 0 ] , [ c , 0 1 ] , [ e , 0 0 1 1 ] , [ h , 0 0 1 0 ] , [ r , 1 1 1 ] , [ t , 1 0 ] ] Which of the following changes will suffice to make this a prefix - free code? None ( It is already a
image text in transcribed

Web design is the process of planning, conceptualizing, and arranging content online. When analyzing the effectiveness of the website, web designers often refer to "hits". A "hit' is another word for a ( n ) purchase video view site session pageview
image text in transcribed

4. Describe an RTL level implementation of beq r1, r2, target (or draw it pictorially as in textbook). Start with a version that resolves the branch in EX stage. Modify it to resolve the branch in ID stage. With 25% branch frequency, what is the CPI for branches (a) with EX resolution (b) with ID resolution? [10 points]
image text in transcribed

please do the two condition for b and detrminant Question (1): The roots of quadratic equation: ar + bx+c=0 can be determined with the quadratic formula. -b + V162 - 4ac .... (1) X2 2a Develop an algorithm that does the following: Using Excel VBA software X1 Step 1: Prompts the user for the coefficients, a, b, and c Step 2: Implements the
image text in transcribed

c++ b. Write an assignment statement to implement each of the following equation in C++. i. Define a constant discount rate for 4%. ii. b = X- 2 Store the product of num1 and num2 into variable named num3. (4 marks)
image text in transcribed

1 0 . Benicio wants to make sure that the Sales table does not contain any duplicate records, which would make any sales analysis incorrect. Use conditional formatting to identify any duplicate sales ID numbers, and highlight them using Light Red Fill with Dark Red Text. Delete the second duplicate record from the table. ( Hint: Do not delete the

In the context of storage measurements, a is the size of a character. nibble decibel byte D ) node
image text in transcribed

please ASAP. Thank you! at is the output of the following code? QUESTION 10 What is the smallest order of magnitude (Big-O) among the following? O(logn) O(nlogn) O(n2) O(n) An array bag contains the entries "lions", "elephants", "otters", "bears", "tigers", "le What does the bag look like after the call to add ("frogs")? "lions", "elephants",
image text in transcribedimage text in transcribedimage text in transcribed

A benchmark typically consists of a single program which is designed to representative of some work that a real user will do on the system. True False

A ( n ) _ _ _ _ _ _ _ _ is a computing system modelled after the human brain that is used to predict values and make classifications. neural network artificial intelligence online analytical processing ( OLAP ) cube expert system data warehouse

The Basic Input - Output System is a collection of low - level subroutines that communicate directly with hardware devices

2. Suppose that register R1 holds the ASCII value of an upper case character, i.e."A", "B",.... . Write an assembly language code fragment that will do the following: Convert that ASCII value to the corresponding lower case ASCII value. Note the result should be in R1 2. Suppose that register R1 holds the ASCII value of an upper case character,
image text in transcribed

If Bobby and Dawn exchange confidential encrypted e - mail messages using public and private key pairs, which of the following keys would Bobby need to encrypt confidential data in an e - mail message sent to Dawn? Dawn's private key Bobby's public key Dawn's public key Bobby's private key
image text in transcribed

Linux Commands - Chapter 3 and 4 1 ) Show your current directory 2 ) Show all filesI 3 ) Create 5 files in Desktop directory with your name 4 ) Create 5 files in Documents directory with your name 5 ) Create 5 files in your home directory with your name 6 ) Write more than 1 0 sentences in some files that you created in each directory 7 ) Pick one

Description Develop a function that identifies the set of prime numbers within a range from 1 to n, where n is the highest number that it tests for. A prime number is a whole number greater than 1 whose only factors are 1 and itself. Factors are whole numbers that can be divided evenly into another number[1] (Links to an external site.)Links to an

Each attribute has two values of T ( indicating True ) and F ( indicating False ) . The class label tells us whether a patient gets COVID - 1 9 infection, where - represents False, and + represents True. The following table summarizes the patient dataset and two class labels + , - .

In Bitcoin mining, the puzzle is _ _ _ _ _ _ _ _ _ _ to solve and / but it is _ _ _ _ _ _ _ _ _ to verify the answer. Group of answer choices easy; difficult difficult; difficult easy; easy difficult; easy

In the below script, Please review the commands in yellow and like before, please describe what each of these commands are doing. Then upload your work in the assignments folder @REM Runs at 6 : 1 5 a . m . Fiserv file retrieval, copies multiple files. 4 / 0 9 / 2 0 1 3 . aREM Removed LONGDATE from XXX . billdetailack file since it is from prior
image text in transcribed

New world encounters preconquest - 1 6 0 8

write the truth table and implement using basic gates for the below 2 Boolean expressions f ( a , b ) = ab + a ' b f ( a , b , c ) = a'bc + ab'c + abc

This problem uses the mpg dataset, which is available in R base package. Consider the plot faceted on class produced by library ( ggplot 2 ) ggplot ( mpg , aes ( x = displ, y = cty ) ) + geom _ point ( ) + facet _ wrap ( class , nrow = 2 ) Instead of faceting, use color aesthetic to draw the plot. What are the advantages to using faceting instead

country ( code , name, continent, population ) countrylanguage ( countrycode , countrylanguage, isofficial, percentage ) Report the code of every country where 'French' is an official language.

Q 2 1 Point Roughly, how many basic operations ( additions , subtractions, multiplications, divisions ) are required to compute the LU decomposition of a matrix A i n R n n when n = 1 0 0 ? 6 6 0 0 6 6 , 0 0 0 6 6 0 , 0 0 0 6 , 6 0 0 , 0 0 0
image text in transcribed

Using functions, write a program that rebuilds a robot over and over using a computer generated dice to choose what pieces to add, then count the number of dice rolls needed. Requirements: A function that generates the correct dice roll, either with a return value or a reference parameter. A function that determines if the robot is complete. To
image text in transcribed

"The software framework necessary for building electronic commerce applications is little understood in existing literature. In general a framework is intended to define and create tools that integrate the information found in todays closed systems and allow the development of e-commerce applications." What is the Electronic Commerce Application

Which of the following forces significantly impact the information security program of an organization? ( Check all that apply. )

Select the correct statement(s) regarding DCE and DTE interfaces. a. while equipment is sometimes characterized as being a DCE or DTE device, it is the interface and direction of transmit and receive data flow that is important b. DCE represents the interface as seen in the direction towards the network c. DTE represents the interface as seen in

What is the blockchain technology and its underlying principles?

Hi this is a memory problem from my computer architecture class. Question 4 Memory Hierarchy A computer system has a 128 byte cache. It uses four-way set-associative mapping with 8 bytes in each block. The physical address size is 32 bits, and the smallest addressable unit is 1 byte. a. (5 marks) Draw a diagram showing the orzanization of the
image text in transcribed

You work for a mid - sized hospital system with 2 5 facilities and 3 , 5 0 0 employees in the Midwestern United States. Senior management wants to purchase and implement a VPN system that supports remote client access for teleworking activities during pandemics, natural disasters, and extreme weather conditions. It must support PPTP - , SSTP - ,

instruction will be executed. JUMP [ Line # ] : Set the address of the next instruction to execute to that of the indicated line number Problem 3 ( 1 point ) In this program, we will find the smallest value among three values that stores in variables num 1 , num 2 , and num 3 , and then stores the smallest value in the variable s . Here is how we
image text in transcribed

October 25, 2017 Graduation Today at 3:12 PM Part 3 (80 points) Write a C program (with meaningful comments) to solve a problem described in English Create an IPO. We want to count how many passing grades are entered. We dont know how many grades there vill be Ube a sentinel controiled while loop that will ask the user to enter student grades
image text in transcribed

Metadata is data about data. It refers to the data used to describe other data, such as description of field True False

is the number of iterations within the bound

Q 1 : For a given date ( year , month, day ) , calculate how many days have passed since Jan. 1 st , 2 0 0 0 . * There are 3 6 5 days in a regular year, 3 6 6 days in a leap year. * Number of days for all 1 2 months are [ 3 1 , 2 8 , 3 1 , 3 0 , 3 1 , 3 0 , 3 1 , 3 1 , 3 0 , 3 1 , 3 0 , 3 1 ] . * There are 2 9 days in Feb if that year is leap

What example does Winner give regarding how technology has affected laws concerning private property? Cyber criminals stealing people's personal information People losing their houses due to online scams. The ownership of "air rights" in New York city. Patent laws pertaining to coding software.
image text in transcribed

Write in C++ Task 1 and 2 have been completed. Just need Tasks 3 and 4 Introduction The Caesar cipher is a substitution cipher where each letter in the original message (called the plaintext) is replaced with a letter corresponding to a certain number of letters up or down in the alphabet. The encrypted message (ciphertext) is not easily readable.

Suppose I have a relation Grades(student_id, assignment_id, score). I have 150 students and 20 assignments. I would grade all submissions of one assignment based on the submission order, and then insert the records. As a result, based on my insertion nature, this relation is not sorted on student_id, but sorted on the assignment_id. I choose heap

Use a regular expression to describe the language accepted by the following graph. Exercise 6 (GTG to Regular Expression) Use a regular expression to describe the language accepted by the following graph. Exercise 7 (NFA to Regular Expression) Use a regular expression to describe the language accepted by the following graph. Exercise 8 (Regular
image text in transcribed

Follow these instructions to finish the hardware and software programming in Assembly. Refer to the example given on page 4 3 6 of the textbook ( program 1 3 - 1 ) . 1 . Try to replace the bottom 5 rows with a section of code to identify if the input voltage on ADC 0 is equal or above 2 . 5 V . If the input is > = 2 . 5 V , set PB 5 to 1 , delay
image text in transcribed

Lesson Objectives: Use streams to read and write files Read and write objects by using serialization Vocabulary: Identify the vocabulary word for each definition below. The process of converting a stream of data into an object. Sequences of bytes or characters transmitted from one program to another program or a file. A back slash in front of
image text in transcribed

In cybersecurity, Accountability is defined as what? A. Being able to apply financial management to a process B. The property of being genuine and verifiable C. The first or original copy of a document or message D. Being able to map an action to an identity

None of these are true about Network Switches EXCEPT: 1 . switches maintain routing tables composed of IP network addresses and interface pairs to determine where to forward packets on an internetwork 2 . switches can operate in full - duplex mode 3 . switches connect LANs, routers connect computers 4 . switches share bandwidth with all other

Showing 900 - 1000 of 1501
  • 10 / 16