Graph Model
A graph model is a mathematical and computational representation of data as a collection of nodes (vertices) and edges (relationships) that connect them, used to model complex relationships and networks. It is fundamental in graph theory and applied in various domains like social networks, recommendation systems, and knowledge graphs to analyze connectivity, paths, and patterns.
Developers should learn graph models when working with highly interconnected data, such as social media networks, fraud detection systems, or route optimization, where traditional relational databases are inefficient. They are essential for implementing algorithms like shortest path, community detection, and PageRank, enabling insights into relationships and dependencies in data.