Database Design 29 - Foreign Key Constraints

Donate!: http://bit.ly/DonateCTVM2. Foreign key constraints are used for referential integrity. Referential integrity protects the connections between tables. The three possibilities talked about in this video are do restrict, cascade, and set null. More content: http://CalebCurry.com Courses for Download: http://www.udemy.com/u/calebcurry/ Facebook: http://www.facebook.com/CalebTheVideoMaker Google+: https://plus.google.com/+CalebTheVideoMaker2 Twitter: http://Twitter.com/calebCurry Subscribe (it's free!): http://bit.ly/PqPyvH Amazing Web Hosting - https://www.dreamhost.com/r.cgi?1487063 (The best web hosting for a cheap price!)