Comprehension of Hierarchical ER Diagrams Compared to Flat ER Diagrams

Revital Danoch, Mira Balabaan, Peretz Shoval Stangel

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review


HERD is a semi-algorithmic method for creating hierarchical ER diagrams from bottom up. The method is based on packaging operations that are applied in several steps on a given flat ER diagram. The result is a hierarchy of simple and interrelated diagrams (namely ER structures) with external relationships to other such diagrams. This chapter describes the application of HERD method using an example from a hospital domain, and an experiment in which we compare the comprehension of HERD diagrams with flat ER diagrams.
Original languageEnglish GB
Title of host publicationInformation Modeling Methods and Methodologies: Advanced Topics in Database Research
EditorsJ. Krogstie, T. Halpin , K. Siau
PublisherIGI Global
Number of pages17
StatePublished - 2005


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