Primary Key And Foreign Key In Sql

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What is the difference between primary key and foreig vrogue co

What Is The Difference Between Primary Key And Foreig Vrogue co

Nov 7 2009 nbsp 0183 32 What is the difference between primary unique and foreign key constraints and indexes I work on Oracle 10g and SQL Server 2008 May 30, 2018 · It is traditional in SQL to designate one of the keys of a table as the "primary key". A "secondary" or "alternate" key is any key that is not selected as the primary. (The distinction …

Foreign key in sql interview question youtube

Foreign Key In SQL Interview Question YouTube

Primary Key And Foreign Key In SqlJun 11, 2012 · Primary keys always need to be unique, foreign keys need to allow non-unique values if the table is a one-to-many relationship. It is perfectly fine to use a foreign key as the … Apr 25 2015 nbsp 0183 32 What are the differences between Unique Key Primary Key and Foreign Key with respect to concept of SQL How they are different from each other