Flowchart Symbols and Their Meanings
Flowcharts · 7 min read
Every standard flowchart symbol explained with examples: terminal, process, decision, input/output, connector, document and more — plus the rules that keep a flowchart easy to read.
AI Flowchart Blog
Guides to flowcharts, ER and UML diagrams, DFDs and system design — for students, developers and anyone who has to explain how something works.
Algorithm and Flowchart Examples: 10 Programs for Beginners
Flowcharts · 10 min read
Ten classic algorithm and flowchart examples for students — even or odd, largest of three numbers, factorial, prime number, Fibonacci, leap year and more — with step-by-step algorithms.
How to Draw an ER Diagram (Step by Step)
Databases · 9 min read
Learn to draw an entity relationship (ER) diagram: entities, attributes, primary and foreign keys, one-to-many and many-to-many relationships, with a complete library management example.
Data Flow Diagram (DFD) Levels 0, 1 and 2 Explained
Final-year project · 9 min read
What a data flow diagram is, the four DFD symbols, the rules, and how to draw level 0 (context diagram), level 1 and level 2 DFDs — with an online food ordering example.
UML Diagrams for Your Final-Year Project
Final-year project · 10 min read
Which UML diagrams a final-year project report needs — use case, class, activity, sequence and state diagrams — what each shows, how to draw it, and the viva questions examiners ask.
YouTube System Design, Explained Simply
System design · 11 min read
How to design YouTube in a system design interview: requirements, upload and transcoding pipeline, blob storage, CDN, adaptive streaming, metadata sharding, caching and recommendations.