Composite Primary Key or Extra ID Column: Which is Better for Database Design?

Composite Primary Key vs. Additional "ID" Column

In designing database tables, the choice between using a composite primary key (composed of multiple columns) or an additional "ID" column raises confusion. This article explores the factors to consider when making this decision.

Candidate Keys

A candidate key is a minimal set of columns that uniquely identifies each row in a table. In the example Books table provided, {Author,

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