Re: The anatomy of plagiarism that was made by authors of "Anchor Modeling"

In this post I will write about a fundamental problem that is not solved in "Anchor Modeling" at all. Here, I am talking about the following paper: "Anchor Modeling an agile modeling technique using the sixth normal form for structurally and temporally evolving data" from November, 2009.

When we talk about RM and ERM, then both of these data models are based on attributes. Here, RM stands for Relational Model, and ERM stands for EntityRelationship model.
In ERM, entities are composed of attributes. In RM relations are composed of attributes. However surrogate keys are not attributes. Moreover, surrogate keys do not exist in the real world.
It seems to me that Edgar Codd solve this problem in such a way that he forbid users to see surrogate keys (see paper RM/T).

In the "Anchor Modeling" is not mentioned this case, at all. So it raises the following fundamental question: How are formed predicates and statements about real entities and their attributes. In this their paper, authors claim the following: "An Anchor model is a relational database schema that displays a high degree of normalization, reuse of data and the ability to store historical data." (see section 1 )

Note that only in the my model, surrogate keys are exactly solved.

Vladimir Odrljin Received on Mon Mar 23 2015 - 07:45:40 CET