Class 12 · Computer Science

Code, structure, and connect

All 13 chapters of the NCERT Computer Science textbook — exception handling through project-based learning — with runnable Python, SQL, and networking notes.

13Chapters
04Themes
Py + SQL+ Networks
Theme 01

Programming & Data Structures

● Chapters 1–6
01
⚠️
Programming
Exception Handling in Python
Syntax errors, built-in exceptions, raising and handling exceptions, and the finally clause.
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02
📁
Programming
File Handling in Python
Text file types, reading/writing, setting offsets, and the pickle module.
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03
📚
Data Structures
Stack
Stack operations, Python implementation, and infix-to-postfix conversion and evaluation.
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04
🚶
Data Structures
Queue
Queue operations, Python implementation, and the deque (double-ended queue).
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05
🔀
Algorithms
Sorting
Bubble sort, selection sort, insertion sort, and time complexity of algorithms.
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06
🔍
Algorithms
Searching
Linear search, binary search, and search by hashing.
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Theme 02

Data & Databases

● Chapters 7–9
07
📊
Data
Understanding Data
Data collection, storage, processing, and statistical techniques for data processing.
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08
🗄️
Database
Database Concepts
File systems, DBMS, the relational data model, and keys in a relational database.
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09
🧮
Database
Structured Query Language (SQL)
Data types, DDL/DML/queries, functions, GROUP BY, and joins across two relations.
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Theme 03

Networks, Communication & Security

● Chapters 10–12
10
🌐
Networks
Computer Networks
Evolution of networking, types, devices, topologies, nodes, Internet/Web/IoT, and DNS.
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11
📡
Communication
Data Communication
Communication components, capacity, switching techniques, transmission media, and protocols.
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12
🛡️
Security
Security Aspects
Malware, antivirus, spam, HTTP vs HTTPS, firewalls, cookies, and network security threats.
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Theme 04

Project Based Learning

● Chapter 13
13
🚀
Capstone
Project Based Learning
Approaches for solving real-world projects, teamwork, and exemplar project descriptions.
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