This is a hotel management system ER diagram. A hotel management system is a set of hotel software solutions that provide seamless operations. Accounting software, customer relationship management (CRM) solutions, and a plethora of industry-specific software are all accessible. An Entity Relationship (ER) Diagram is a type of flowchart that depicts how "entities" like people, things, or concepts interact with one another inside a system. ER Diagrams are most typically used to construct or debug relational databases in the areas of software engineering, business information systems, education, and research. They are also known as ERDs or ER Models, and they use a predetermined set of symbols like as rectangles, diamonds, ovals, and connecting lines to depict the interconnection of entities, connections, and processes. Use EdrawMax' s easy online diagram editor to edit this diagram and export results to multiple image formats.