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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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27 nov 1976 ano - 1976

Descrição:

A new database model called Entity-Relationship, or ER, was proposed by P. Chen this year. This model made it possible for designers to focus on data application, instead of logical table structure.

Adicionado na linha do tempo:

Data:

27 nov 1976 ano
Agora
~ 48 years ago