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3 years ago

"what do you perform when you want to recall specific records from a database"

Computers and Technology

1 answer:

Ivan3 years ago

5 0

A select query

select column1, column2, columnN
from table
where condition
order to be pretty;

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Will give Brainiest and stuff to right answer[s].

Aneli [31]

#22 is 1s and 0s, hope that helps a little bit

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3 years ago

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Q.drtrdyudoijoemrkdf

sveta [45]

Answer:

Yes

Explanation:

8 0

2 years ago

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Which of the following is NOT true about variables?

VikaD [51]

Answer:

The answer to this question is given below in the explanation section.

Explanation:

The value stored by a variable can be changed after it is assigned(true).

The value of a variable can be changed after it is assigned, for example:

int a=10;

and we can change the value of variable a in letter program such as:

a=15;

Variables are a name for a spot in the computer's memory (true).

it is true, because the variables value stored in the computer's memory and we can access theses values by their name (variable name). so Variables are a name for a spot in the computer's memory.

Variable names can be words: such as temperature or height (true).

Yes, the variable name can be words such as height, width, temperature etc.

The value stored by a variable cannot be changed after it is assigned (false).

It is noted that the value stored by a variable can be changed after it is assigned. However, it is noted that is some programming language, you can't change the value of static variable.

3 0

3 years ago

More registers appear to be a good thing, in terms of reducing the total number of memory accesses a program might require. Give

gulaghasi [49]

Answer:

Following is given the answer step by step:

Explanation:

First of all we will write a program using MARIE that will support the statement: Sum = (A + B) - (C + D). All the necessary comments are given in front of each statement:

Load A # variable A will be loaded

Add B # B will be added to A

Store Temp1 # A + B will be stored in Temp1

Load C # C will be loaded in memory

Add D # D will be added to C

Store Temp2 # C + D will ge stored in Temp2

Load Temp1 # Temp1 will be loaded in the memory

Subt Temp2 # Temp2(A + B) get subtracted from Temp1(A - B)

Store Sum # (A + B) - (C + D) will get stored in Sum.

We can see from above program that memory is accessed 9 times. While if C + D get executed first than memory accesses will be reduced to 7.

Above same program could be written using an architecture of 4 registers:

The program is as follows:

Load R1 , A #A will be loaded into R1

Load R2 , B # B will be loaded into R2

Add R1 , R2 # R2 gets added to R1 and the result is stored in R1 (A + B)

Load R3 , C # C loaded into R3

Load R4 , D # D loaded into R4

Add R3 , R4 # Value in R4 gets added into R3 and R3 becomes (C + D)

#no memory accesses required for this operation

Subt R1 , R4 #R4 (C + D) gets subtracted from R1 (A + B)

#no memory accesses required for this operation

Store Sum # The recent value will be stored into Sum

Here memory is accessed 5 times in total.

8 0

3 years ago

Please explain what steps you will take to prevent hackers from getting access to your personal information.

yuradex [85]

The steps I would take are 1. Making a strong password with symbols and numbers. 2. I will set up a 2 way authentication ther for if someone would be trying to hack me I would get an alert in order to stop the attempt. 3 I will not use the same password each time.

4 0

3 years ago