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TN 12th Computer Applications மின்னணு தரவு பரிமாற்றம் Sample Question Papers Study Material - QB365 Set A

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12th Standard

TN 12th Computer Applications மின் - வணிக பாதுகாப்பு அமைப்புகள் Sample Question Papers Study Material - QB365 Set A

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12th Standard

TN 12th Computer Applications மின்னணு செலுத்தல் முறைகள் Sample Question Papers Study Material - QB365 Set A

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12th Standard

TN 12th Computer Applications மின் - வணிகம் Sample Question Papers Study Material - QB365 Set A

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12th Standard

TN 12th Computer Applications திறந்த மூல கருத்துருக்கள் Sample Question Papers Study Material - QB365 Set A

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12th Standard

TN 12th Computer Applications வலையமைப்பு வடமிடல் Sample Question Papers Study Material - QB365 Set A

12th Standard Computer Science English Medium Important 2 Mark Book Back Questions (New Syllabus) 2020

Published on: 31/08/2020

Download Tamil Nadu 12th Standard Computer Science question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.

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Std: 12th Standard - Computer Science

chapter: - Model Question paper

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Questions:

Generic 2

15 x 2 = 30

List the general types of data visualization.

Write the command to populate record in a table. Give an example.

Differentiate compiler and interpreter.

What is use of next() function?

Which component of SQL lets insert values in tables and which lets to create a table?

What is data consistency?

What is instantiation?

Differentiate del with remove( ) function of List.

What is slicing?

10.

What is base condition in recursive function?

11.

Write note on range () in loop.

12.

What is Sorting?

13.

Write short notes on Exponent data?

14.

What is Mapping?

15.

Write the inference you get from X : = (78).

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Answers Key:

Generic 2

15 x 2 = 30

(i) Charts
(ii) Tables
(iii) Graphs
(iv) Maps
(v) Infographics
(vi) Dashboards

To populate the table "INSERT" command is passed to SQLite."execute" method executes the SQL command to perform some action.
Example:
Sql_command =" " INSERT INTO student (Rollno, Sname, Grade, Gender, Average, birth_date) values (NULL, "Akshay", "B", "M", "87.8", "2001-12-12");" " cursor.execute(sql_command)

S.No	Compiler	Interpreter
(i)	It takes an entire Program at a time.	It takes a single line of code or instruction at a time.
(ii)	Display all errors after compilation, all at the	Displays error of each line one by one.

The row heading is get sorted, to avoid the first row should be skipped. This is can be done by using the command "next( )".

Command Description Component Insert Inserts data into a table DML Create To create tables in the database DML

Data Consistency means that data values are the same at all instances of a database.

Once a class is created, next to create an object or instance of that class. This process of creating object is called as "Class Instantiation".

	del function	remove () function
(i)	del statement is used to delete elements whose index is known.	move( ) function is used to delete elements of a list if its index is unknown.
(ii)	The del statement can also be used to delete entire list.	The remove ( ) function can be used to delete one or more elements if the index value is not known.

(i) Slice is a substring of a main string. A substring can be taken from the original string by using [ ]. operator and index or subscript values.
(ii) Thus, [ ] is also known as slicing operator.Using slice operator, you have to slice one or more substrings from a main string.
General format of slice operation :
Str [start : end]

10.

(i) A recursive function calls itself.
(ii) The condition that is applied in any recursive function is known as base condition.
(iii) A base condition is must in every recursive function otherwise it will continue to execute like an infinite loop.

11.

The range() is a built-in function, to generate series of values between two numeric intervals.
The syntax of range() is as follows:
range (start,stop,[step])
Where,
start - refers to the initial value
stop - refers to the final value
step - refers to increment value, this is optional part.

12.

Sorting is a method of arranging group of items in ascending or descending order. Various sorting techniques in algorithms are Bubble sort, Quick sort, Heap sort, Selection sort, Insertion sort.

13.

An Exponent data contains decimal digit part, decimal point, exponent part followed by one or more digits.

14.

The process of binding a variable name with an object is called mapping = (equal to sign) is used in programming languages to map the variable and object.

15.

X: = (78) has an expression in it but (78) is not itself an expression. Rather, it is a function definition. Definitions bind values to names, in this case the value 78 being bound to the name 'X'.