ERS (Entity-Relationship Schema)

An Entity-Relationship Schema (ERS) is a high-level blueprint used to design and organize how data is structured in a database. It defines the main things (entities) like customers or products, and how these things are related to each other, such as a customer placing an order. The ERS helps visualize the data model clearly, ensuring that all relevant information is captured accurately and relationships between data are logically structured. This blueprint guides the creation of a functional database that supports efficient data management and retrieval.