Considere la siguiente tabla: ¿Qué campos de la tabla son claves candid...

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Considere la siguiente tabla:

¿Qué campos de la tabla son claves candidatas (candidate keys)? 

Passport_Number

✅

SSN (Social Security Number)

✅

EmployeeID

✅

License_Number

✅

Job Title

❌

Last Name + First Name

❌

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