CompTIA ITF+ (FC0-U61) — Question 257

SQL databases use primary and foreign keys to enable which of the following?

Answer options

• A. Rows
• B. Fields
• C. Schemas
• D. Relationships

Correct answer: D

Explanation

The correct answer is D, as primary and foreign keys are essential for establishing and enforcing relationships between tables in a SQL database. Options A, B, and C refer to structural elements of the database but do not specifically pertain to the relational aspect that keys provide.