I have a question about those four thing because they confuse me. Whats the difference between conceptual model and normalization ? Also where ER and EER are belongs to Conceptual model or normalization?
Thank you
Conceptual model vs normalization. ER diagrams EER diagrams
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Conceptual models are informal. Examples of conceptual models are ER diagrams and (when explicitly used for the purpose of conceptual modeling) UML class diagrams.
Normalization is a procedure that can be applied to formal models consisting of :
(a) all the relation schemas involved in the design
(b) all the functional dependencies applying to the individual relation schemas
Normalization, and assessing normal form of a given design, can only be applied to formal models, and does not apply to informal/conceptual models and/or modeling techniques such as (E)ER.