A structured visual guide to Operating Systems and Database Management Systems, designed to simplify core concepts through diagrams, organized learning, and interview-focused content.
Screen.Recording.2026-07-31.134021.mp4
This repository explains Operating Systems and Database Management Systems using structured visual diagrams. Each topic is organized independently, making it suitable for both learning and quick revision.
- Operating System fundamentals through visual diagrams.
- Database Management System concepts with structured explanations.
- Core concepts commonly asked in SDE and Backend interviews.
- Quick revision before interviews, exams, or projects.
- A single reference for essential Operating System and DBMS topics.
| # | Topic | View |
|---|---|---|
| 1 | Operating System Introduction & Boot Process | View |
| 2 | Kernel & System Calls | View |
| 3 | Program, Process & Context Switching | View |
| 4 | CPU Scheduling Algorithms | View |
| 5 | Threads, Multithreading & Multicore Systems | View |
| 6 | Race Conditions, IPC, Mutex, Semaphore & Monitor | View |
| 7 | Classical Synchronization Problems | View |
| 8 | Deadlock & Banker's Algorithm | View |
| 9 | Memory Management, Address Binding, Paging & Segmentation | View |
| 10 | Virtual Memory, Page Replacement Algorithms & Related Concepts | View |
| 11 | File Systems & Free Space Management | View |
| 12 | Disk Scheduling, Spooling & RAID | View |
| 13 | Virtualization & Operating System Security | View |
| 14 | Belady's Anomaly, Zombie Process & Orphan Process | View |
| # | Topic | View |
|---|---|---|
| 1 | ER Model & DBMS Fundamentals | View |
| 2 | Cardinality, Participation Constraints & Weak Entity | View |
| 3 | Relational Model, Keys & Integrity Constraints | View |
| 4 | Functional Dependency, Redundancy & Database Anomalies | View |
| 5 | Normalization & Denormalization | View |
| 6 | SQL & Joins | View |
| 7 | Transactions, Concurrency, Isolation & Locking | View |
| 8 | Serializability | View |
| 9 | Two-Phase Commit (2PC) & MVCC | View |
| 10 | Indexing | View |
| 11 | B-Tree, B+ Tree & Hashing | View |
| 12 | SQL vs NoSQL & CAP Theorem | View |
| 13 | Replication & Sharding | View |
| 14 | OLTP vs OLAP & Generalization vs Specialization | View |
This repository is part of a visual Computer Science learning series.
| Repository | Description |
|---|---|
| Backend Engineering Foundations | Visual guides covering Backend Engineering, System Design, Distributed Systems, LLD, Design Patterns, Security, Databases, and Backend Architecture. |
| Networks Foundation | Visual Computer Networks diagrams for learning, revision, and interview preparation. |
Nikhil Gupta
This repository is actively maintained. New diagrams and concepts may be added as technologies evolve or valuable interview topics emerge.
If you found this repository helpful, consider giving it a ⭐.