They’re such a key tool in system design, helping us visualize data interactions in a simple ... For example, in the Crow's Foot notation, a one-to-many relationship is indicated by a single ...

This paper’s primary objective is to design a web-based library management system that enables efficient book borrowing and return. To achieve this objective, the study employs a use-case diagram, an ...

An entity-relationship diagram (ERD) is a visual representation of data ... real-world objects or concepts that are related to each other. For example, a database for a library might include entities ...

Abstract: Entity Relationship (ER) model for database design was developed by Peter Chen of MIT in 1976. This is an intuitive and conceptual representation of the data model. It is normally ...