Explore topic-wise InterviewSolutions in .

Answer:

The three most common operating systems for personal computers are Microsoft WINDOWS, macOS, and LINUX. Modern operating systems use a graphical user interface, or GUI (PRONOUNCED GOOEY).

Explanation:

Explanation:

super computer is used in the national RESEARCH CENTER which predicts natural CALAMITIES, like earthquake, tsunami, etc.

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ANSWER:

RIGHT answer SNEHAL.......SIS

ANSWER:

Nahi pata

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EXPLANATION:

APPLICATION..................

Answer:

Answer. Explanation: The __________component of CHART DEPICTS the colours, PATTERNS or symbols assigned to data series

Explanation:

Answer:

Important Questions for Class 12 Computer Science (Python) – Database Concepts

Important Questions for Class 12 Computer Science (Python) – Database Concepts

Short Answer Type Questions-I

Question 1:

Observe the following PARTICIPANTS and EVENTS table cerefully and write the name of the RDBMS operation which will be used to PRODUCE the OUTPUT as shown in RESULT? Also, find the Degree and Cardinality of the RESULT.

important-questions-for-class-12-computer-science-python-database-concepts-1

important-questions-for-class-12-computer-science-python-database-concepts-2i

important-questions-for-class-12-computer-science-python-database-concepts-2

Answer:

Cartesian Product

Degree — 4

Cardinality = 6

Question 2:

Define degree and cardinality. Also, Based upon GIVEN table write degree and cardinality.

important-questions-for-class-12-computer-science-python-database-concepts-4

Answer:

Degree is the number of attributes or columns present in a table.

Cardinality is the number of tuples or rows present in a table.

Patients Degree = 4

Cardinality = 5

Question 3:

Observe the following table and answer the parts (i) and (ii):

important-questions-for-class-12-computer-science-python-database-concepts-5

In the above table, can we have Qty as primary key.

What is the cardinality and degree of the above table?

Answer:

We cannot USE Qty as primary key because there is a duplication of values and primary key value cannot be duplicate.

Degree =4

Cardinality = 5

Question 4:

Explain the concept of union between TWO tables, with the help of appropriate example.

Answer:

The union operation denoted by ‘U’ combines two or more relations. The resultant of union operation contain tuples that are in either of the table or in both tables.

important-questions-for-class-12-computer-science-python-database-concepts-6

Question 5:

Observe the following STUDENTS and EVENTS tables carefully and write the name of the RDBMS operation which will be used to produce the output as shown in LIST table? Also, find the degree and cardinality of the table.

important-questions-for-class-12-computer-science-python-database-concepts-7

Answer:

Cartesian Product

Degree = 4

Cardinality = 6

ANSWER:

FIRST OPERATING SYSTEM

ANSWER:

SORRY mate

Explanation:

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ANSWER:

you see in picture

EXPLANATION:

MARK as a brainilist

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ɪ ʜᴏᴘᴇ ɪᴛ's ʜᴇʟᴘɪɴɢ ᴜ ɴɪsʜᴀ :)

Explanation:

fsutil behavior set disable8dot3 1

Open command prompt and GO to the directory which you want to know the short path.

type : DIR /x.

This command will show the EXISTING short paths.

(In this example I am creating short NAME for C:\Temp folder)

Syntax : fsutil file setshortname

a is UR answer

Explanation:

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ANSWER:

decimal

Explanation:

f UNI Gurmeet for rough rut REG hi

Answer:

1) True

2) false

3) false

EXPLANATION:

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Explanation:

52 // integer LITERAL

age // VARIABLE name

System.out.println("ABC"); // method call

"Java" // string literal

98.6D // DOUBLE precision floating-point literal

89L // long integer literal

.

EXPLANATION:

An operating system has three main functions: (1) manage the computer's resources, such as the CENTRAL processing unit, memory, disk drives, and printers, (2) establish a USER interface, and (3) execute and provide SERVICES for applications software.

Answer:

Chemical indicator, any substance that GIVES a visible sign, usually by a colour change, of the PRESENCE or absence of a threshold CONCENTRATION of a chemical species, such as an ACID or an alkali in a solution. An EXAMPLE is the substance called methyl yellow, which imparts a yellow colour to an alkaline solution.

Explanation:

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ANSWER:

I don't KNOW BRO but follów me on íńsťágram my iđ is _0_kenkaneki_0_

ANSWER:

int main()

{

int x=5,y=15;

x= x++ + ++y;

y = ++x + ++y;

printf("%d %d",x,y);

return 0;

}

Explanation:

output would be like this

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ANSWER:

a SET of all the different FORMS of a word

किसी शब्द के विभिन्न रूप; रूपावली

a typical example or pattern of something

आदर्श प्रतिमान; नमूना

Answer:

Hey ☺️✌️

Explanation:

✏️The hard disk, sometimes called the "hard DRIVE" (which is actually the mechanism that holds the hard disk), is a spindle of magnetic discs that can hold SEVERAL gigabytes of data. ... Memory, on the other hand, is not the same as disk space! Memory refers to the random ACCESS memory (RAM) inside your computer.

✏️Internal hard drives are LOCATED inside your computer. Unlike an external hard drive, these drives are not portable and only be used by the computer they inhabit. There are two main kinds of internal hard drives: the HDD (hard disk drive) and the SSD (solid state drive). HDDs are the more traditional kind.

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Answer:

yes,you can SCAN and image by USING any other SOFTWARE other than paint....

1=interface

2=user

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ANSWER:

I THINK its MODEM......

Explanation:

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Answer:

A printer is a device that accepts text and graphic output from a COMPUTER and transfers the information to paper, usually to STANDARD size sheets of paper. Printers vary in size, speed, sophistication, and COST. In general, more expensive printers are USED for higher-resolution color printing.

Explanation:

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Answer:

010101010101101010101001111000101

EXPLANATION:

Hierarichal DATABASE has ADVANTAGES over RELATIONAL database.

positively

4. Diamond Shape Pattern
import java.util.Scanner;
public CLASS DiamondPattern.
{
public static void main(String ARGS[])
{
int row, i, J, space = 1;
System.out.print("ENTER the number of rows you want to print: ");
Scanner sc = new Scanner(System.in);

Answer:

follow me

Explanation:

All cells have a continuous cell MEMBRANE that surrounds them, and the cell membrane encloses a number of other tiny STRUCTURES. Once such a continuous membrane is FOUND and it encloses many other BODIES that each have their own internal STRUCTURE, that enclosed area can be identified as a cell.

Explanation:

In COMPUTER science and computer programming, a DATA type or simply type is an attribute of data which tells the compiler or interpreter how the programmer intends to use the data. Most programming languages support BASIC data types of integer numbers, floating-point numbers, CHARACTERS and BOOLEANS

EXPLANATION:

To MOVE the taskbar from its default position along the bottom edge of the screen to any of the other THREE edges of the screen:

1. Click a blank portion of the taskbar.
2. Hold down the primary mouse BUTTON, and then drag the mouse pointer to the place on the screen where you want the taskbar.

Explanation:

In computing, a PROTOCOL is a convention or standard that controls or enables the connection, COMMUNICATION, and data transfer between computing ENDPOINTS. In its simplest form, a protocol can be defined as the RULES governing the syntax, semantics, and synchronization of communication.

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Answer:

7 rules for touch typing

• Never look at the keyboard. Even with those awkward symbols and ESPECIALLY with UPPER and lower CASE letters. ...
• Focus on Accuracy. Technique and Accuracy is paramount when it comes to touch typing. ...
• Find the INDEX Keys. ...
• Practise, practise and practise some more. ...
• Sit Straight. ...
• Look Straight. ...
• Take a Break.

EXPLANATION:

MAINFRAME COMPUTER

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Answer:

USING video EDITORS like soloop, moviemaker, kinemaster ETC.

ANSWER:

SHIFT Z PLS mark me the brainliest

ANSWER:

UNRESPONSIVE keys

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ANSWER:

The OUTPUT of C code

a=2

b=1

Answer:

Rapid Typing Tutor is designed to teach adults and kids to use their computer keyboard more efficiently than ever. LEARNING to type can be easy and FUN! Typing Tutor Features: Full COURSES for Beginner, Advanced and Expert typists.

Explanation:

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Answer:

When the computer is turned on. POST (POWER On SELF Test) is a process which initializes the screen, KEYBOARD, hardware and ALSO tests the main memory.

ANSWER:

IMPORT means bringing NEW content into an Audacity project by any means, such as File > Open, File > Import or dragging files into the project WINDOW. The content would typically be an audio file like WAV or MP3, but (using File > Import) could also be a label TRACK, a MIDI file or Raw Data

Answer:

A URL has two MAIN components: protocol identifier For the URL HTTP:// example . com , the protocol identifier is http. resource name : for the URL http://example.com , the resource name is example. com . Note that the protocol identifier and the resource name are seperated by a colon and two forward SLASHES.

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ANSWER:

TRIANGLE = 3

Hexagon=6

Pentagon =5

ANSWER:

controller

Explanation:

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ANSWER:

TRUE

EXPLANATION:

this answer was true

Answer:

1. SQL QUERY for DISPLAY all the information of all salesmen

select  salesman_id, NAME, city, commission from SALESMAN

or

select * from salesman

2. SQL Query for display name and commission for all the salesmen

select  name, commission from salesman

3. SQL Query for display names and city of salesman, who belongs to the city of Paris

select name, city  from salesman where city = 'Paris'

Answer:

or is the answer

Explanation:

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