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[Topic] Entity Relationship Diagrams [See also] Entity Relationship Diagrams [Detail] 
Entity-relationship modeling is an abstract and conceptual database modeling method, used to produce a schema or semantic data model of, for example, a relational database and its requirements, visualized in Entity-Relationship Diagrams (ERDs). ERDs in Enterprise Architect assist you in building conceptual data models through to generating Data Definition Language (DDL) for the target DBMS.
Business Models [Enterprise Architect User Guide]
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