SQL Basics Course 03-03: ID Columns | 2023 Coding Tutorial For Beginners | Bill Weinman

In this video, Bill Weinman explains what an ID column is in a relational database and how it holds a unique value for each row in a table, often called a primary key. He shows how to create an ID column in SQLite and notes that the specific syntax for creating an ID column varies for each database system. Bill demonstrates how the system automatically generates a unique sequential number for each row in the table and enforces a unique value constraint. He also emphasizes that the name of the column is not important and that every table in every database has a primary key, even if the ID column is not visible. Bill recommends consulting the documentation for your system to find its specific syntax for creating an ID column.
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