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 …

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.

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.

Apr 4, 2017 · I need to create a Foreign Key relationship between two SQL Server tables and I would like to know how this is done using the SQL Server Management Studio (SSMS) GUI as …

FYI, always best to name your constraints, especially with ORMs in use. And if you just want to create the constraint on its own, you can use ALTER TABLE. add constraint …

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 …

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.

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 …

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 …

Oct 22, 2024 · In SQL, we can add a foreign key either during table creation by defining it in the CREATE TABLE statement or to an existing table using the ALTER TABLE statement. In this …