As the complexity of databases grows, Entity-Relationship Diagrams (ERDs) provide a visual representation of tables, attributes, and relationships between them, making it easier to understand and manage data integrity and referential integrity in Postgres. ERDs can help turn abstract database structures into visual representations, make schema design accessible, and understand the current state of the database. With tools like Neon and Outerbase's automatic diagram generation, databases are becoming more accessible to everyone, including non-technical team members or beginners, allowing developers to better control their data structures, facilitate communication between technical and non-technical stakeholders, and make systems more transparent and robust.