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3 years ago

________ a database rearranges data and objects in a database to make its size smaller

1 answer:

8 0

<span>An attribute in a relation of a database that serves as the primary key of another relation in the same database is called a

</span>

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Assign listNodes with all elements with a clasa name prog-lang

ra1l [238]

Using the knowledge in computational language in JAVA it is possible to write a code that Assign listNodes with all elements with a clasa name prog-lang

<h3>Writting in JAVA:</h3>

let listNodes;

//assigning listNodes with all elements with a class name of 'special-language'

listNodes = document.getElementsByClassName('special-language');

//for loop to traverse all node in listNodes and print every element in it with class name special-language

for (let i = 0; i < listNodes.length; i++) {

console.log(listNodes[i].innerHTML);

}

See more about JAVA at brainly.com/question/12975450

#SPJ1

8 0

1 year ago

What is the age group for the silent genration

Maurinko [17]

21 years old. If you take 1944-1923 you get 21 because that would be ho wold they are

7 0

3 years ago

Aria has modified the hard disk that hosts the operating system by using the fdisk command. The fdisk command indicates that the

Neko [114]

Answer:

A. Run the parted command.

D. Reboot the system.

Explanation:

Linux command line shell is a vital tooling server administration. It provides the flexibility of executing user and kernel mode commands on the command line interface.

Unlike graphic user interface operating systems, it receives typed commands on its prompt to execute tasks. The fdisk command shows the newly created partition on a disk, and to reload, the parted command is executed or the system should be rebooted.

3 0

3 years ago

Write a program to display MPH (Miles per Hour). Create a function to calculate the MPH. Ask the user for the number of miles dr

puteri [66]

Answer:

In Python:

def MPH(miles,minutes):

mph = round(60 * miles/minutes,1)

return mph

miles = float(input("Miles: "))

minutes = float(input("Minutes: "))

if miles>0 and minutes>0:

print("MPH: ",MPH(miles,minutes))

else:

print("Positive inputs only")

Explanation:

This defines the function

def MPH(miles,minutes):

This calculates mph rounded to 1 decimal place

mph = round(60 * miles/minutes,1)

This returns the calculated mph

return mph

The main begins here

This gets input for miles

miles = float(input("Miles: "))

This gets input for minutes

minutes = float(input("Minutes: "))

If miles and minutes are positive

if miles>0 and minutes>0:

This calls the MPH function

print("MPH: ",MPH(miles,minutes))

If otherwise, this prompts the user for positive inputs

<em> print("Positive inputs only")</em>

7 0

2 years ago

Write a Java method to delete a record from a B-tree of order n.

max2010maxim [7]

Answer:

Deleting a record on a B-tree consists of three main events:

- Searching the node where the key to be deleted exists

- Deleting the key

- Balancing the tree if required

Explanation:

q = NULL;

p = tree;

while (p) {

i = nodesearch(p, key);

q = p;

if (i < used(p) -1 && key == k(p,i)) {

found = TRUE;

position = i;

break;

}

p = son(p,i);

}

if (!found)

else if (subtree(p)) {

if (used(p) > ((n-1)/2)+1)

delkey (p, position, key);

else {

replace (p, position, fsucc(p));

p0 r1 p1 r2 p2 r3 ……. pn-1 rn-1 pn

q = &fsucc(p);

qpos = index of fsucc;

if (used(rbrother(p)) > ((n-1)/2)+1)

replace (q, qpos, sonsucc(q));

else

while (q && used(q) < (n-1)/2) {

concatenate(q, brother(q));

q = father(q);

}

else

delkey(p, position, key);

}

6 0

2 years ago