1D0-541 Relational Practice Questions
The free 1D0-541: CIW v5 Database Design Specialist questions that deal with relational, with answers and explanations. The full bank and the timed practice test cover every topic the exam asks about.
Question #5
What does a primary key in a relational database ensure?
Correct answer: C
Explanation
A primary key uniquely identifies each record in a table and ensures that there are no duplicate entries, maintaining the integrity of the data.
Question #9
What is the purpose of a foreign key in a relational database?
Correct answer: A
Explanation
A foreign key is a field (or collection of fields) in one table that uniquely identifies a row of another table, establishing a link between the two tables.
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