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Relational databases enforce​ ______________ integrity to​ ensure, for​ instance, that a teacher​ can't be assigned to a class table unless they already exist in the teacher table.
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Relational databases enforce​ ______________ integrity to​ ensure, for​ instance, that a teacher​ can't be assigned to a class table unless they already exist in the teacher table.

User Masahiko
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what? where ar the answer choices?
User Dipin Narayanan
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