Learn how to create, test, validate, and optimize foreign keys in SQL Server using queries and tools. Improve your data quality and integrity with foreign keys.

To check the primary and foreign keys in MYSQLi, you can use the SHOW CREATE TABLE statement or the INFORMATION_SCHEMA database. The SHOW CREATE TABLE statement displays the SQL code that was used ...

PRIMARY KEY - constraint uniquely identifies each record in a table. FOREIGN KEY - constraint is used to prevent actions that would destroy links between tables. CREATE DATABASE - creates a new ...