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Fiesta28 [93]
2 years ago
7

Although the DBMS is designed to recover a database to a previous consistent state when an interruption prevents the completion

of a required set of transactions, the transactions themselves are defined by the end user or programmer and must be semantically correct.a. Trueb. False
Computers and Technology
1 answer:
Alexandra [31]2 years ago
3 0

Answer:

The answer to the given question is "True".

Explanation:

In the database, we use the queries, when some error has occurred with queries so, the database provides a PL/SQL  that is known as the procedural language that is the combination of the structured query language.  

In this programming language, we use some triggers that are mainly available with database. The triggers are a set of the code that is executed automatically when an interruption has occurred.  

That's why the answer to this question is "True"

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Use the Manufacturing database from "Excel Databases.xls" on Blackboard. Use Excel to develop a multiple regression model to pre
Dennis_Churaev [7]

Answer:

52.64

Explanation:

Multiple Regression:

Multiple regression generally explains the relationship between multiple independent or predictor variables and one dependent or criterion variable.

Please kindly check attachment for the step by step solution of the given problem.

6 0
2 years ago
In a relational database model, a(n) _____ operation pares down a table by eliminating columns according to certain criteria. in
nikklg [1K]

I guess the correct answer is Project

If thе usеr is intеrеstеd in sеlеcting thе valuеs οf a fеw attributеs, rathеr than sеlеctiοn all attributеs οf thе Tablе (Rеlatiοn), thеn οnе shοuld gο fοr Prοjеct Οpеratiοn.

8 0
2 years ago
Write the recursive function max_depth; it is passed a binary (any binary tree, not necessarily a binary search tree) and a valu
OleMash [197]

Answer:

A python code was used in writing of the recursive function max_depth; and passed a binary (any binary tree, not necessarily a binary search tree) and a value as arguments.

Explanation:

Solution

To solve this given question we make use of Python programming language.

Thus

THE CODE:

class BinaryTreeNode:

def __init__(self, value, left=None, right=None):

self.value = value

self.left = left

self.right = right

# recursive max_depth function implementation

def max_depth(tree, value):

if tree == None:

return -1

# recursive calls to this function

leftDepth = max_depth(tree.left, value)

rightDepth = max_depth(tree.right, value)

# return the maximum depth

if tree.value == value or leftDepth > -1 or rightDepth > -1:

return 1 + max(leftDepth, rightDepth)

else:

return max(leftDepth, rightDepth)

btn1 = BinaryTreeNode(2)

btn2 = BinaryTreeNode(3, None, btn1)

btn3 = BinaryTreeNode(3)

btn4 = BinaryTreeNode(3)

btn5 = BinaryTreeNode(2, btn2, btn3)

btn6 = BinaryTreeNode(1, btn4)

tree = BinaryTreeNode(3, btn5, btn6)

print('max_depth(tree, 1):',max_depth(tree, 1))

print('max_depth(tree, 2):',max_depth(tree, 2))

print('max_depth(tree, 3):',max_depth(tree, 3))

Note: Kindly find an attached copy of the Implementation of max_depth() function, Code to test the max_depth() function and the sample output below.

8 0
2 years ago
7. Which control is used to display multiple records in List Form
padilas [110]

Answer:

I think a is correct answer.

3 0
2 years ago
Read 2 more answers
Given 4 integers, output their product and their average, using integer arithmetic.
solmaris [256]

Answer:

see explaination

Explanation:

Part 1:

import java.util.Scanner;

public class LabProgram {

public static void main(String[] args) {

Scanner scnr = new Scanner(System.in);

int num1;

int num2;

int num3;

int num4;

int avg=0, pro=1;

num1 = scnr.nextInt();

num2 = scnr.nextInt();

num3 = scnr.nextInt();

num4 = scnr.nextInt();

avg = (num1+num2+num3+num4)/4;

pro = num1*num2*num3*num4;

System.out.println(pro+" "+avg);

}

}

------------------------------------------------------------------

Part 2:

import java.util.Scanner;

public class LabProgram {

public static void main(String[] args) {

Scanner scnr = new Scanner(System.in);

int num1;

int num2;

int num3;

int num4;

double avg=0, pro=1; //using double to store floating point numbers.

num1 = scnr.nextInt();

num2 = scnr.nextInt();

num3 = scnr.nextInt();

num4 = scnr.nextInt();

avg = (num1+num2+num3+num4)/4.0; //if avg is declared as a float, then use 4.0f

pro = num1*num2*num3*num4;

System.out.println((int)pro+" "+(int)avg); //using type conversion only integer part

System.out.printf("%.3f %.3f\n",pro,avg);// \n is for newline

}

}

8 0
2 years ago
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