An attribute is a relation of a database that serves as the primary key of another relation in the same data base is called a
Correct answer: C. Foreign key
- A. Global key
- B. Link key
- C. Foreign key
- D. Super key
Explanation
A foreign key is a field in one table that uniquely identifies a row of another table or the same table. In simpler words, the foreign key is defined in a second table, but it refers to the primary key or a unique key in the first table
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Databases cover tables, records, fields, keys and relationships, together with database management systems and relational database design. The subject includes primary and foreign keys, normalization, SQL commands such as SELECT, INSERT, UPDATE and DELETE, queries, forms and reports, while distinguishing a database from a spreadsheet used for simple tabular data.
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