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Biological data such as protein structure and function, DNA sequences, and metabolic pathways require conceptual modeling characteristics that are not available in the widely used ER (Entity-Relationship) model and its variant the EER (enhanced-ER) model. In this paper, we suggest a solution to this problem, requiring only minimal changes to the EER model(More)
Biological data such as protein structure and function, DNA sequences, and metabolic pathways require conceptual modelling characteristics that are not available in the widely used Entity-Relationship (ER) model and its variants, such as the Enhanced-Entity Relationship (EER) model. In particular, three constructs that occur frequently in bioinformatics(More)
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