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krek1111 [17]
3 years ago
13

Basics AutoCare is a small auto service business with two locations in a Midwest (U.S.) city. The business is based on providing

routine maintenance at fixed cost to car owners. The owners have decided to computerize their operations to allow them to better track their business. Data to be gathered for each service visit includes service ID, service item, service item cost, vehicle owner, owner telephone number, vehicle make and model, vehicle year, and date of service.Assignments:1. Create an ERD for the auto service system.2. Create 3NF table designs for the system.3. For each of the entities identified, design tables and identify the possible candidate keys, the primary key, a probable foreign key, and potential secondary keys.4. Use sample data to populate the fields for three records.

Computers and Technology
1 answer:
kogti [31]3 years ago
5 0

Answer:

The ER diagram for the auto service is shown in the attachment.

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3. A vulnerability is: a. A hacker searching for open ports b. A known attack method c. An incorrectly implemented policy d. All
ELEN [110]

Answer:

A

Explanation:

A hacker searching for open ports denotes vulnerability of computer (to hacking).

Cheers

7 0
3 years ago
Write a loop that reads c-strings from standard input where the c-string is either "land", "air", or "water". The loop terminate
Anvisha [2.4K]

Answer:

I am writing a C++ code.        

#include <iostream> // for input output functions

using namespace std; // identifies objects like cin cout

int main() { //start of main() function body

string c_string; // stores the string entered by user from land water or air

int land=0; // contains the number of times land string is read in

int air=0; //contains the number of times air string is read in

int water = 0; //contains the number of times water string is read in

cin>>c_string; //reads the string entered by user from air water or land

/*while loop continues to execute until user enters xxxxx or maximum length of a string exceeds 8 */

while(c_string!= "xxxxx" && c_string.length()<=8) {

if(c_string=="land"){ // if string entered by user is land

land = land + 1;} //counts and increments each occurrence of land string by 1

else if(c_string=="air"){// if string entered by user is air

air = air + 1;}// counts and increments each occurrence of string air by 1

else if(c_string=="water"){// if string entered by user is water

water = water + 1;}//counts and increments each occurrence of air by 1

cin>>c_string;}

/* keeps reading the string entered by user from land air or water, until the loop breaks after the user enters xxxxx or user enters a string whose length is greater than 8 */

//prints the number of times land, air and water are read in

cout << "land:"<<land;

cout << endl<<"air:"<<air;

cout << endl<< "water:"<<water; }                      

                                                                                     

Explanation:

Everything is well explained in the comments above.

The program prompts the user to input strings. These strings are either land air or water. The while loop continues to read the input strings until user enters xxxxx or the string entered by user exceeds the length 8. Both these terminating conditions are added in the while loop. After the loop terminates, the number of times land, air and water strings are read is displayed on the output screen. Any other string entered by user other than these 3 is ignored. The program along with the output is attached.

3 0
3 years ago
The procedure by which a process's state is saved before being swapped out of the cpu, then us restored to the state when the pr
belka [17]

The procedure is known as<u> context switching</u>.

In the field of computers, context switching can be described as a procedure in which a process is stored so that it can be executed at a later point. Such a procedure allows multitasking operations easier. A simple CPU can be utilized for multiple processes.

After a task is done, it can be swapped out of the CPU and can be restored later. By using context switching, more space can be provided on a CPU as freeing from one process will make space for the other.

When switching a process, the status of the older running process is saved on the CPU as registers.

Context switch makes it feasible to share one CPU for multiple procedures hence reducing the concerns that arise from using additional processors.

To learn more about context switch, click here,

brainly.com/question/21685677

#SPJ4

3 0
2 years ago
In this exercise we look at memory locality properties of matrix computation. Th e following code is written in C, where element
Sonja [21]

Answer:

Explanation:

temporal locality can be defined as: when a particular memory  is referenced or accessed several times  within a specific period of time. In the question, i think the variable that exhibit temporal locality are I, J and 0(all the variable). This is because the variable J and 0 are accessed several times within the loop. I would not have been part of it, but in the A[I][J]=B[I][0]+A[J][I], the variable "I" is also accessed in the addition. this is why it is part of the temporal locality.

4 0
3 years ago
1. What is material science?
Murljashka [212]

Answer:

Explanation:

The study of the properties of solid materials and how those properties are determined by a material’s composition and structure is material science.

6 0
3 years ago
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