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QWhat is the purpose of primary keys in the relational model?

ID: #13363 Database Concepts MCQs 134 views
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#13363Q ID
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Database Concepts MCQsTopic
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  • A They represent disk addresses for cross-table relationships. ✔ ✖
  • B They simplify update operations by ensuring data is stored once. ✔ ✖
  • C They define the structure of free-form records. ✔ ✖
  • D They allow for the storage of complex internal structures. ✔ ✖
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Primary keys in the relational model are used to uniquely identify rows in a table, ensuring that each fact is stored only once and simplifying update operations.

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