What is a auto field?

An auto field, often referred to as an "auto-increment" field, is a database column that automatically generates a unique sequential number for each new record inserted into a table. This feature is commonly used for primary keys to ensure that each record can be uniquely identified without requiring manual input. In SQL databases, it is typically defined using keyWords like AUTO_INCREMENT in MySQL or IDENTITY in SQL Server. Auto fields enhance data integrity and simplify record management.