Скачать или смотреть Tutorial 28 –Constraints in SQL | PostgreSQL | NOT NULL | CHECK

In this video, I explained what SQL constraints are and then explained the NOT NULL and CHECK constraints.

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Below is the link to the PostgreSQL Playlist
   • Tutorial 1 - What is Data? | What is Datab...  

Below is the link to the PostgreSQL documentation page for constraints
https://www.postgresql.org/docs/curre...

Link to the SQL Data Types video 👉    • Tutorial 27 –Data Types in SQL | PostgreSQL  

Link to the primary key video 👉   • Tutorial 20 – Primary key in SQL | Postgres  

Link to the foreign key video 👉    • Tutorial 21 – Foreign key in SQL  
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