What is a good example of a primary key?

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For example, students are routinely assigned unique identification (ID) numbers, and all U.S. citizens have government-assigned and uniquely identifiable Social Security numbers. Street addresses or driver license numbers are examples of primary keys used to uniquely identify (respectively) locations or cars. 14 авг. 2020 г.

Which is the best example of a primary key?

Examples of Primary Key Valuesan automatically generated number.social security number.an email address (but only if two users can't share the same email address)vehicle identification number.driver licence number.some other special code that is unique to each record.What is a Primary Key? - Database.Guide

What are three examples of primary key?

A primary key, also called a primary keyword, is a key in a relational database that is unique for each record. It is a unique identifier, such as a driver license number, telephone number (including area code), or vehicle identification number (VIN). A relational database must always have one and only one primary key.

What would be a good primary key for the students table?

The student's unique student ID number is a good choice for a primary key in the STUDENTS table. The student's first and last name are not good choices because there is always the chance that more than one student might have the same name.

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