If you are working with SQL DB2, you may need to create tables that have primary and foreign keys to enforce data integrity and establish relationships between different entities.

Definition: A primary key is a column (or a combination of columns) in a table that uniquely identifies each row in that table. Properties: ## **Foreign Key** 1. **Definition**: A foreign key is a ...

A Primary Key is a column (or combination of columns) in a table that uniquely identifies each row. A table can only have one primary key. References the primary key in another table. The values in ...

Over the years, SQL has continued to evolve, with new features and enhancements being introduced to meet the changing needs of data management. Key Concepts of an SQL Database . Rows and Columns .