Abstract
Entity Relationship Diagram (ERD) is the first step in database design; it is an important step for the database designers, users, analyst, managers and software engineering. Since English is a universal language, this paper describes a methodology that extracts ERD from English sentences. This methodology is based on a predefined set of a heuristic rules that aims to extract the elements of the ERD, then these rules are mapped into a diagram. A diagram generator automatically converts the rules into the ERD according to the rules of generating. The proposed methodology is explained by examples to show how it can provide a mechanism for quickly and easily way in extracting the ERD.
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