SQL Constraint | SQL Part 3 | Adding and Dropping Constraints

HI Everyone, this video is the 3rd video in SQL video series and in this video you will get the idea on different constraints in SQL which you can apply to table columns and how to write the queries for them. Credits ======== Rules icons created by Freepik - Flaticon from "https://www.flaticon.com/free-icons/rules" Restriction icons created by Freepik - Flaticon from "https://www.flaticon.com/free-icons/restriction" Denied icons created by Iconjam - Flaticon from "https://www.flaticon.com/free-icons/denied" Foursquare check in icons created by hqrloveq - Flaticon from "https://www.flaticon.com/free-icons/foursquare-check-in" Wrong icons created by Uniconlabs - Flaticon from "https://www.flaticon.com/free-icons/wrong" Person icons created by photo3idea_studio - Flaticon from "https://www.flaticon.com/free-icons/person" Question icons created by Freepik - Flaticon from "https://www.flaticon.com/free-icons/question" Block icons created by Freepik - Flaticon from "https://www.flaticon.com/free-icons/block" Books icons created by popo2021 - Flaticon from "https://www.flaticon.com/free-icons/books" Confusion icons created by Freepik - Flaticon from "https://www.flaticon.com/free-icons/confusion" Customer icons created by Freepik - Flaticon from "https://www.flaticon.com/free-icons/customer" Think icons created by Freepik - Flaticon from "https://www.flaticon.com/free-icons/think" Happy icons created by Flat Icons - Flaticon from "https://www.flaticon.com/free-icons/happy"