informazioni sul modello E/R: https://it.wikipedia.org/wiki/Modello_E-R
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File degli items: https://docs.google.com/spreadsheets/d/1yGowf-7cTMFTiL8EfR9NK_gxDLbQDutqqBOGqLvy49A/edit#gid=0
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Link alle mappe:
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Conceptual map: https://docs.google.com/drawings/d/1Qvs3FoqgWfJ8TeUaQA_9rAR2ZXiOdkFTljUQolG9uLk/edit?usp=sharing
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E/R Model:
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Theoretical Model: https://drive.google.com/file/d/1DJ6nIx3zQzoqgPN590HGSaRQNiUsadyl/view?usp=sharing
