Roles in ORM: A suggested semantics

Carver, Andy (2011) Roles in ORM: A suggested semantics. [Teaching Resource]


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Evidence grows that ORM has some problems to overcome in order to escape the charge that it cannot reliably lead, as claimed, to ONF (optimal normal form) relational schemas. Some of that evidence we present here. We also indicate that there is more than one way to address the issue effectively, thus saving ORM’s reputation as a generator of fully normalized relational schemas. But of two ways mentioned, the more satisfactory one involves, essentially, ascribing a certain semantics to the idea of “role-playing” in ORM. We show how it would address these issues, and why it is the better approach.

Item Type: Teaching Resource
Subjects: Q Science > QA Mathematics > QA76 Computer software
Divisions: Faculty of Engineering, Science and Mathematics > School of IT
Depositing User: Unnamed user with email
Date Deposited: 20 Apr 2016 08:49
Last Modified: 20 Apr 2016 08:49

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