Abstract
Use cases provide a means to envision the behavior of the environment as it responds to external stimuli. An IPO diagram shows how data flows throughout the system while flowcharting is a method to envision the programming logic that underlies the behavior depicted by the use case. An entity relationship diagram also known as an ERD or E-R diagram, is a methodology that describes how the data of a system is stored at a high level of detail. It is different from the IPO diagram, which models the functions performed by a system as it uses or creates data.
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Yourdon, E. (1989). Modern structured analysis. Englewood Cliffs: Yourdon Press/Prentice-Hall.
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© 2018 Association for Educational Communications and Technology (AECT)
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Frantiska, J. (2018). Entity-Relationship Diagrams. In: Visualization Tools for Learning Environment Development. SpringerBriefs in Educational Communications and Technology. Springer, Cham. https://doi.org/10.1007/978-3-319-67440-7_4
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DOI: https://doi.org/10.1007/978-3-319-67440-7_4
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