Nov 18, 2025 · This article describes how to create foreign key relationships in SQL Server by using SQL Server Management Studio or Transact-SQL. You create a relationship between two tables …

The FOREIGN KEY constraint is a key used to link two tables together. A FOREIGN KEY is a field (or collection of fields) in one table that refers to the PRIMARY KEY in another table.

Foreign Keys in SQL Server: Here you will learn what is a foreign key and how to established a relationship between two tables using a foreign key in the SQL Server database.

Jul 15, 2025 · What is a Foreign key in SQL Server? A foreign key in SQL Server is a column or a set of columns in one table that creates a relationship with the data in another table. It refers to the primary …

Oct 22, 2024 · In this tutorial, we’ll illustrate how to add a foreign key constraint to an existing SQL table. In our examples, we’ll use Baeldung’s simple University database.

Dec 4, 2024 · In SQL Server, a FOREIGN KEY constraint is used to enforce referential integrity between two tables by establishing a relationship between a column (or a set of columns) in one table (child …

You first need to check if the primary-key exists for the column you want to set your foreign key to reference to. In this example, a foreign key on table T_ZO_SYS_Language_Forms is created, …

This SQL Server tutorial explains how to use Foreign Keys in SQL Server with syntax and examples. A foreign key is a way to enforce referential integrity within your SQL Server database.

The table containing the foreign key is known as the child table, and the table containing the candidate key is known as the parent table. The purpose of the foreign key is to ensure referential integrity of …

In SQL, the FOREIGN KEY constraint is used to create a relationship between two tables. In this tutorial, you will learn about the FOREIGN KEY constraint in SQL with the help of examples