Code Farmer Manor Chronicle

Sep 19, 2026 · Fundamentals

Stop Memorizing All 14 UML Diagrams: Only 7 Are High-Frequency in Daily Development

This article explains UML 2.5's 14 diagram types, categorizes them into structural and behavioral diagrams, highlights the 7 most frequently used diagrams in daily development (class, sequence, state machine, activity, use case, component, deployment), provides a cheat sheet for selecting the right diagram per scenario, and recommends tools like Mermaid and PlantUML.