Choosing between a relational database (RDBMS) and a graph database depends on your data structure and query needs.

A graph database organizes data as a network of entities and relationships. It uses mathematical graph theory to store and operate on data relationships.

Relational databases hold information in tables with rows and columns. Unlike graph databases, they tend to become inefficient in operations involving complex data relationships because they require several data table lookups. Here's a detailed article that talks about Graph Database Vs. Relational Database.