UNIQUE KEY IN SQL | Interview question скачать в хорошем качестве

UNIQUE KEY IN SQL | Interview question

This is a free video tutorial by Kishan mashru on unique constraint in Oracle SQL, the video firstly explains what unique constraint is and how it can be used along with its various limitations, then the video gives perfect examples to understand how to create a unique key at the column level or inline, or at the table level i.e out of line. The video gives a demonstration on ALTER TABLE ADD CONSTRAINT and ALTER TABLE DROP CONSTRAINT statements also. Subscribe to the channel :    / @kishanmashru   Other Playlists: Data Warehousing Concepts:    • Data Warehousing Concepts   Python and Database:    • Python | How to Install python packages   SQL and PL/SQL Interview Questions:    • SQL AND PL/SQL INTERVIEW QUESTIONS   SQL and PL/SQL concepts:    • SQL and PLSQL   Content and video created by : Kishan Mashru