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11 December, 15:10

List three types of cardinalities for relationships within a relational database.

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  1. 11 December, 15:35
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    This is about identifiers in a record referring to other records.

    You can have many to one, one to one, many to many.

    E. g., if you have two tables, Authors and Books, then a book record could have a reference to an author record. Since an author can write many books, this would be a many-to-one relationship.
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