Questions about Physical Design 2 & 3 by https://padlet.com/peter_stordy/x4g3imqpd10tvibj Please post your questions about the Physical Design 2 & 3 lecture videos en-us 2023-01-30 16:48:57 UTC 2024-04-29 16:26:44 UTC hello@padlet.com https://padlet-uploads.storage.googleapis.com/460741824/ecc6bdbba2075f4f31ccd6fec0c349c8/Mini_Me.jpg Surrogate Primary Key https://padlet.com/peter_stordy/x4g3imqpd10tvibj/wish/2971932414 I'm confused - please, when do you use a surrogate primary key?

]]> 2024-04-27 11:29:17 UTC https://padlet.com/peter_stordy/x4g3imqpd10tvibj/wish/2971932414 PHYSICAL DESIGN 3 -- OPENING_TIME Table https://padlet.com/peter_stordy/x4g3imqpd10tvibj/wish/2973958588 Dear Dr.Peter

According to your example, this table, you changed DAY column to DAY_NO.


I'd would like to know what benefits from applying this to the table.


The text from Monday-Sunday changed to 1-7.


Thanks you in advance for your answer.

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