Question

____________ are different categories within a table.​

Answer 1

Answer:

Never make one table per widget.

If two tables have virtually identical columns, then they probably should be combined into a single table. It may need an extra column to tell the things apart. And changes to the indexes.

Normalize, but don't over-normalize. Do not, for example normalize 'continuous' values like DATETIME or FLOAT.

Do have a PRIMARY KEY on every table. Consider using a "natural" PK, or use an AUTO_INCREMENT. (Sometimes one is the obvious choice; sometimes the other; and sometimes it is a coin-flip.)

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