Answer to Question #75641 in Databases | SQL | Oracle | MS Access for Jonny

Question #75641
Referential integrity refers to maintaining consistency of values about the same attribute across relations. For instance, in a database that has a State relation with a state_code column for the two-character state codes, there cannot be another relation referencing that State relation with state_code values other than the ones in the State relation. What component of the Relational Model would enforce such referential integrity? a Foreign Key a Primary Key a Relation Index
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Expert's answer
2018-04-06T15:30:11-0400
a Foreign Key

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