---
title: "Discussion on \"Foriegn key in sql\" | Hashnode"
description: "Discussion on \"Foriegn key in sql\". A foreign key is a field (or collection of fields) in a table that refers to the primary key in another table. It is used to establish a relationship between the two tables.\nA foreign key is usually implemented as a column (or group of columns) in a ..."
url: "https://hashnode.com/posts/foriegn-key-in-sql/63a40827eb636411f0054365"
---

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# [Foriegn key in sql](https://rushikeshpise.hashnode.dev/foriegn-key-in-sql?utm_source=hashnode&utm_medium=feed)

A foreign key is a field (or collection of fields) in a table that refers to the primary key in another table. It is used to establish a relationship between the two tables. A foreign key is usually implemented as a column (or group of columns) in a ...

Dec 22, 2022 · 2 min read · rushikeshpise.hashnode.dev  
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## Written by

[Rushikesh Pise](https://hashnode.com/@RushikeshPise)

@RushikeshPise · Hyderabad,India

  
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