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  1. 1alexsasha1

    ENERGY database design and non-uniqueness

    Thanks a lot!
  2. 1alexsasha1

    ENERGY database design and non-uniqueness

    Thanks for your reply! Indeed I am going to put together data over the few years and if I understood correctly you comment it should not cause non-uniqueness but might cause duplicate values? For this I thought of using this Yes/No column, to be able to retrieve datapoints from single, the most...
  3. 1alexsasha1

    ENERGY database design and non-uniqueness

    Dear All, I am developing a world energy database. All elements in the structure seem logical but one. I had to introduce two artificial columns to distinguish between sources, from which data come (I try to keep all the data in the raw format). This is how my table looks like (total of 8...

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