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Computer Science  
CLASS-XII 
 Code No. 083  
2023-24  
1. Prerequisites  
    Computer Science- Class XI  
2. Learning Outcomes  
    Student should be able to  
     a) apply the concept of function.  
     b) explain and use the concept of file handling.  
     c) use basic data structure: Stacks  
     d) explain basics of computer networks.  
     e) use Database concepts, SQL along with connectivity between Python and SQL. 
 
3. Distribution of Marks: 
 
Unit No. Unit Name Marks Periods 
 
Theory Practical 
I Computational Thinking and 
Programming – 2 
40 70 50 
II Computer Networks 10 15 … 
III Database Management 20 25 20 
 Total 70 110 70 
 
4. Unit wise Syllabus  
Unit I: Computational Thinking and Programming – 2   
? Revision of Python topics covered in Class XI.   
? Functions: types of function (built-in functions, functions defined in module, user 
defined functions), creating user defined function, arguments and parameters, default 
Page 2


Computer Science  
CLASS-XII 
 Code No. 083  
2023-24  
1. Prerequisites  
    Computer Science- Class XI  
2. Learning Outcomes  
    Student should be able to  
     a) apply the concept of function.  
     b) explain and use the concept of file handling.  
     c) use basic data structure: Stacks  
     d) explain basics of computer networks.  
     e) use Database concepts, SQL along with connectivity between Python and SQL. 
 
3. Distribution of Marks: 
 
Unit No. Unit Name Marks Periods 
 
Theory Practical 
I Computational Thinking and 
Programming – 2 
40 70 50 
II Computer Networks 10 15 … 
III Database Management 20 25 20 
 Total 70 110 70 
 
4. Unit wise Syllabus  
Unit I: Computational Thinking and Programming – 2   
? Revision of Python topics covered in Class XI.   
? Functions: types of function (built-in functions, functions defined in module, user 
defined functions), creating user defined function, arguments and parameters, default 
parameters, positional parameters, function returning value(s), flow of execution, scope 
of a variable (global scope, local scope)  
? Exception Handling: Introduction, handling exceptions using try-except-finally blocks  
? Introduction to files, types of files (Text file, Binary file, CSV file), relative 
and absolute paths   
? Text file: opening a text file, text file open modes (r, r+, w, w+, a, a+), closing a text 
file, opening a file using with clause, writing/appending data to a text file using write() 
and writelines(), reading from a text file using read(), readline() and readlines(), seek 
and tell methods, manipulation of data in a text file   
? Binary file: basic operations on a binary file: open using file open modes (rb, rb+, wb, 
wb+, ab, ab+), close a binary file, import pickle module, dump() and load() method, 
read, write/create, search, append and update operations in a binary file   
? CSV file: import csv module, open / close csv file, write into a csv file using 
writer(),writerow(),writerows() and read from a csv file using reader()   
? Data Structure: Stack, operations on stack (push & pop), implementation of stack 
using list.  
 
Unit II: Computer Networks  
? Evolution of networking: introduction to computer networks, evolution of networking 
(ARPANET, NSFNET, INTERNET)  
? Data communication terminologies: concept of communication, components of data 
communication (sender,receiver, message, communication media, protocols), 
measuring capacity of communication media (bandwidth, data transfer rate), IP 
address, switching techniques (Circuit switching, Packet switching)  
? Transmission media: Wired communication media (Twisted pair cable, Co-axial cable, 
Fiber-optic cable), Wireless media (Radio waves, Micro waves, Infrared waves)  
? Network devices (Modem, Ethernet card, RJ45, Repeater, Hub, Switch, Router, 
Gateway, WIFI card)  
? Network topologies and Network types: types of networks (PAN, LAN, MAN, WAN), 
networking topologies (Bus, Star, Tree)  
? Network protocol: HTTP, FTP, PPP, SMTP, TCP/IP, POP3, HTTPS, TELNET, VoIP  
? Introduction to web services: WWW, Hyper Text Markup Language (HTML), 
Extensible Markup Language (XML), domain names, URL, website, web browser, 
web servers, web hosting  
Unit III: Database Management   
? Database concepts: introduction to database concepts and its need   
? Relational data model: relation, attribute, tuple, domain, degree, cardinality, keys 
(candidate key, primary key, alternate key, foreign key)  
? Structured Query Language: introduction, Data Definition Language and Data 
Manipulation Language, data type (char(n), varchar(n), int, float, date), constraints (not 
null, unique, primary key), create database, use database, show databases, drop 
database, show tables, create table, describe table, alter table (add and remove an 
attribute, add and remove primary key), drop table, insert, delete, select, operators 
(mathematical, relational and logical), aliasing, distinct clause, where clause, in, 
between, order by, meaning of null, is null, is not null, like, update command, delete 
command, aggregate functions (max, min, avg, sum, count), group by, having clause, 
Page 3


Computer Science  
CLASS-XII 
 Code No. 083  
2023-24  
1. Prerequisites  
    Computer Science- Class XI  
2. Learning Outcomes  
    Student should be able to  
     a) apply the concept of function.  
     b) explain and use the concept of file handling.  
     c) use basic data structure: Stacks  
     d) explain basics of computer networks.  
     e) use Database concepts, SQL along with connectivity between Python and SQL. 
 
3. Distribution of Marks: 
 
Unit No. Unit Name Marks Periods 
 
Theory Practical 
I Computational Thinking and 
Programming – 2 
40 70 50 
II Computer Networks 10 15 … 
III Database Management 20 25 20 
 Total 70 110 70 
 
4. Unit wise Syllabus  
Unit I: Computational Thinking and Programming – 2   
? Revision of Python topics covered in Class XI.   
? Functions: types of function (built-in functions, functions defined in module, user 
defined functions), creating user defined function, arguments and parameters, default 
parameters, positional parameters, function returning value(s), flow of execution, scope 
of a variable (global scope, local scope)  
? Exception Handling: Introduction, handling exceptions using try-except-finally blocks  
? Introduction to files, types of files (Text file, Binary file, CSV file), relative 
and absolute paths   
? Text file: opening a text file, text file open modes (r, r+, w, w+, a, a+), closing a text 
file, opening a file using with clause, writing/appending data to a text file using write() 
and writelines(), reading from a text file using read(), readline() and readlines(), seek 
and tell methods, manipulation of data in a text file   
? Binary file: basic operations on a binary file: open using file open modes (rb, rb+, wb, 
wb+, ab, ab+), close a binary file, import pickle module, dump() and load() method, 
read, write/create, search, append and update operations in a binary file   
? CSV file: import csv module, open / close csv file, write into a csv file using 
writer(),writerow(),writerows() and read from a csv file using reader()   
? Data Structure: Stack, operations on stack (push & pop), implementation of stack 
using list.  
 
Unit II: Computer Networks  
? Evolution of networking: introduction to computer networks, evolution of networking 
(ARPANET, NSFNET, INTERNET)  
? Data communication terminologies: concept of communication, components of data 
communication (sender,receiver, message, communication media, protocols), 
measuring capacity of communication media (bandwidth, data transfer rate), IP 
address, switching techniques (Circuit switching, Packet switching)  
? Transmission media: Wired communication media (Twisted pair cable, Co-axial cable, 
Fiber-optic cable), Wireless media (Radio waves, Micro waves, Infrared waves)  
? Network devices (Modem, Ethernet card, RJ45, Repeater, Hub, Switch, Router, 
Gateway, WIFI card)  
? Network topologies and Network types: types of networks (PAN, LAN, MAN, WAN), 
networking topologies (Bus, Star, Tree)  
? Network protocol: HTTP, FTP, PPP, SMTP, TCP/IP, POP3, HTTPS, TELNET, VoIP  
? Introduction to web services: WWW, Hyper Text Markup Language (HTML), 
Extensible Markup Language (XML), domain names, URL, website, web browser, 
web servers, web hosting  
Unit III: Database Management   
? Database concepts: introduction to database concepts and its need   
? Relational data model: relation, attribute, tuple, domain, degree, cardinality, keys 
(candidate key, primary key, alternate key, foreign key)  
? Structured Query Language: introduction, Data Definition Language and Data 
Manipulation Language, data type (char(n), varchar(n), int, float, date), constraints (not 
null, unique, primary key), create database, use database, show databases, drop 
database, show tables, create table, describe table, alter table (add and remove an 
attribute, add and remove primary key), drop table, insert, delete, select, operators 
(mathematical, relational and logical), aliasing, distinct clause, where clause, in, 
between, order by, meaning of null, is null, is not null, like, update command, delete 
command, aggregate functions (max, min, avg, sum, count), group by, having clause, 
joins: cartesian product on two tables, equi-join and natural join   
? Interface of python with an SQL database: connecting SQL with Python, performing 
insert, update, delete queries using cursor, display data by using connect(), cursor(), 
execute(), commit(), fetchone(), fetchall(), rowcount, creating database connectivity 
applications, use of %s format specifier or format() to perform queries  
5. Practical 
 
S.No Unit Name Marks 
(Total=30) 
1 
 
 
Lab Test: 
1. Python program (60% logic + 20% 
documentation + 20% code quality) 
8 
2. SQL queries (4 queries based on one or 
two tables) 
4 
2 Report file:   
? Minimum 15 Python programs.   
? SQL Queries – Minimum 5 sets using 
one table / two tables.   
? Minimum 4 programs based on Python - 
SQL connectivity 
7 
3 Project (using concepts learnt in Classes 11 
and 12) 
8 
4 Viva voce  3 
 
6. Suggested Practical List:  
Python Programming  
? Read a text file line by line and display each word separated by a #.  
? Read a text file and display the number of vowels/consonants/uppercase/lowercase 
characters in the file.  
? Remove all the lines that contain the character 'a' in a file and write it to another file.  
? Create a binary file with name and roll number. Search for a given roll number and 
display the name, if not found display appropriate message.  
? Create a binary file with roll number, name and marks. Input a roll number and update 
the marks.  
? Write a random number generator that generates random numbers between 1 and 6 
(simulates a dice).  
Page 4


Computer Science  
CLASS-XII 
 Code No. 083  
2023-24  
1. Prerequisites  
    Computer Science- Class XI  
2. Learning Outcomes  
    Student should be able to  
     a) apply the concept of function.  
     b) explain and use the concept of file handling.  
     c) use basic data structure: Stacks  
     d) explain basics of computer networks.  
     e) use Database concepts, SQL along with connectivity between Python and SQL. 
 
3. Distribution of Marks: 
 
Unit No. Unit Name Marks Periods 
 
Theory Practical 
I Computational Thinking and 
Programming – 2 
40 70 50 
II Computer Networks 10 15 … 
III Database Management 20 25 20 
 Total 70 110 70 
 
4. Unit wise Syllabus  
Unit I: Computational Thinking and Programming – 2   
? Revision of Python topics covered in Class XI.   
? Functions: types of function (built-in functions, functions defined in module, user 
defined functions), creating user defined function, arguments and parameters, default 
parameters, positional parameters, function returning value(s), flow of execution, scope 
of a variable (global scope, local scope)  
? Exception Handling: Introduction, handling exceptions using try-except-finally blocks  
? Introduction to files, types of files (Text file, Binary file, CSV file), relative 
and absolute paths   
? Text file: opening a text file, text file open modes (r, r+, w, w+, a, a+), closing a text 
file, opening a file using with clause, writing/appending data to a text file using write() 
and writelines(), reading from a text file using read(), readline() and readlines(), seek 
and tell methods, manipulation of data in a text file   
? Binary file: basic operations on a binary file: open using file open modes (rb, rb+, wb, 
wb+, ab, ab+), close a binary file, import pickle module, dump() and load() method, 
read, write/create, search, append and update operations in a binary file   
? CSV file: import csv module, open / close csv file, write into a csv file using 
writer(),writerow(),writerows() and read from a csv file using reader()   
? Data Structure: Stack, operations on stack (push & pop), implementation of stack 
using list.  
 
Unit II: Computer Networks  
? Evolution of networking: introduction to computer networks, evolution of networking 
(ARPANET, NSFNET, INTERNET)  
? Data communication terminologies: concept of communication, components of data 
communication (sender,receiver, message, communication media, protocols), 
measuring capacity of communication media (bandwidth, data transfer rate), IP 
address, switching techniques (Circuit switching, Packet switching)  
? Transmission media: Wired communication media (Twisted pair cable, Co-axial cable, 
Fiber-optic cable), Wireless media (Radio waves, Micro waves, Infrared waves)  
? Network devices (Modem, Ethernet card, RJ45, Repeater, Hub, Switch, Router, 
Gateway, WIFI card)  
? Network topologies and Network types: types of networks (PAN, LAN, MAN, WAN), 
networking topologies (Bus, Star, Tree)  
? Network protocol: HTTP, FTP, PPP, SMTP, TCP/IP, POP3, HTTPS, TELNET, VoIP  
? Introduction to web services: WWW, Hyper Text Markup Language (HTML), 
Extensible Markup Language (XML), domain names, URL, website, web browser, 
web servers, web hosting  
Unit III: Database Management   
? Database concepts: introduction to database concepts and its need   
? Relational data model: relation, attribute, tuple, domain, degree, cardinality, keys 
(candidate key, primary key, alternate key, foreign key)  
? Structured Query Language: introduction, Data Definition Language and Data 
Manipulation Language, data type (char(n), varchar(n), int, float, date), constraints (not 
null, unique, primary key), create database, use database, show databases, drop 
database, show tables, create table, describe table, alter table (add and remove an 
attribute, add and remove primary key), drop table, insert, delete, select, operators 
(mathematical, relational and logical), aliasing, distinct clause, where clause, in, 
between, order by, meaning of null, is null, is not null, like, update command, delete 
command, aggregate functions (max, min, avg, sum, count), group by, having clause, 
joins: cartesian product on two tables, equi-join and natural join   
? Interface of python with an SQL database: connecting SQL with Python, performing 
insert, update, delete queries using cursor, display data by using connect(), cursor(), 
execute(), commit(), fetchone(), fetchall(), rowcount, creating database connectivity 
applications, use of %s format specifier or format() to perform queries  
5. Practical 
 
S.No Unit Name Marks 
(Total=30) 
1 
 
 
Lab Test: 
1. Python program (60% logic + 20% 
documentation + 20% code quality) 
8 
2. SQL queries (4 queries based on one or 
two tables) 
4 
2 Report file:   
? Minimum 15 Python programs.   
? SQL Queries – Minimum 5 sets using 
one table / two tables.   
? Minimum 4 programs based on Python - 
SQL connectivity 
7 
3 Project (using concepts learnt in Classes 11 
and 12) 
8 
4 Viva voce  3 
 
6. Suggested Practical List:  
Python Programming  
? Read a text file line by line and display each word separated by a #.  
? Read a text file and display the number of vowels/consonants/uppercase/lowercase 
characters in the file.  
? Remove all the lines that contain the character 'a' in a file and write it to another file.  
? Create a binary file with name and roll number. Search for a given roll number and 
display the name, if not found display appropriate message.  
? Create a binary file with roll number, name and marks. Input a roll number and update 
the marks.  
? Write a random number generator that generates random numbers between 1 and 6 
(simulates a dice).  
? Write a Python program to implement a stack using list.  
? Create a CSV file by entering user-id and password, read and search the password for 
given userid.  
Database Management  
? Create a student table and insert data. Implement the following SQL commands on the 
student table:  
o ALTER table to add new attributes / modify data type / drop attribute  
o UPDATE table to modify data  
o ORDER By to display data in ascending / descending order  
o DELETE to remove tuple(s)  
o GROUP BY and find the min, max, sum, count and average  
? Similar exercise may be framed for other cases.  
? Integrate SQL with Python by importing suitable module.  
7. Suggested Reading Material   
? NCERT Textbook for COMPUTER SCIENCE (Class XII)   
? Support Materials on the CBSE website.  
8. Project  
The aim of the class project is to create something that is tangible and useful using Python 
file handling/ Python-SQL connectivity. This should be done in groups of two to three 
students and should be started by students at least 6 months before the submission 
deadline. The aim here is to find a real world problem that is worthwhile to solve.  
Students are encouraged to visit local businesses and ask them about the problems that 
they are facing. For example, if a business is finding it hard to create invoices for filing GST 
claims, then students can do a project that takes the raw data (list of transactions), groups 
the transactions by category, accounts for the GST tax rates, and creates invoices in the 
appropriate format. Students can be extremely creative here. They can use a wide variety of 
Python libraries to create user friendly applications such as games, software for their school, 
software for their disabled fellow students, and mobile applications, of course to do some of 
these projects, some additional learning is required; this should be encouraged. Students 
should know how to teach themselves.  
The students should be sensitized to avoid plagiarism and violations of copyright issues while 
working on projects. Teachers should take necessary measures for this. 
 
 
 
 
 
 
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