Neo4j for Beginners – Graph DB Simplified Neo4j is a graph database system that stores data as nodes and relationships instead of rows and columns. 🧠 When to Use It? Social networks – friend of a friend Fraud detection – linked accounts Recommendation engines – user-item paths 💡 Benefits Query depth relationships easily No joins needed – better performance Visual and intuitive Try Cypher queries like: MATCH (a)-[r]->(b) RETURN a.name, r.type, b.name Insight: Graph DBs like Neo4j model complex real-world systems far better than SQL.