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Free CompTIA ITF+ FC0-U61 Practice Question

A database administrator is tasked with designing a new table in a relational database that holds customer account information. The administrator must ensure that every row in the table has a unique, non-null identifier for each customer. Which type of constraint should the administrator use to enforce this rule?

  • Check constraint

  • Unique constraint

  • Primary key constraint

  • Foreign key constraint

This question is for objective:
Database Fundamentals
Your Score:
Database Fundamentals
Infrastructure
Applications and Software
Software Development Concepts
Security
IT Concepts and Terminology