Anonymous
Anonymous Asked in Cars &Transportation · 2 weeks ago

What can be used as a primary key?

Contents
  1. What can be a primary key?
  2. What are the 5 types 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 can be a primary key?

A primary key is the column or columns that contain values that uniquely identify each row in a table. A database table must have a primary key for Optim to insert, update, restore, or delete data from a database table.

What are the 5 types of primary key?

Primary Key.Candidate Key.Alternate Key.Super Key.Composite Key.Foreign Key.Unique Key.Types of Keys in Database Management System

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