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The development of the conceptual schema and/or the logical model and/or the physical settings of a database.

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Does it make sense to define a new "Data type"? Is there a way to do so?

I'm basically new to SQL, and I was making my own project when this question came to my mind. I'm making a database that has an entity where an attribute would be a "number" and a "year". In many prog …
Francisco Laferrière's user avatar