Learn the difference between conceptual and logical data models, ... Representation: Presented using ER diagrams, DDL statements for specific DBMS. Focus: Table structures, attributes, ...

A logical data model is usually expressed in a graphical notation, such as an entity-relationship diagram (ERD), or a textual notation, such as a data dictionary. A logical data model is ...

This repo contains files and diagrams about the relational database of the DART's (Dallas Area Road Transport) bus transportation system. "EER Diagram" diagram has the logical data model of the system ...