Relational DB ( INNER JOIN, Normalizaton, Denormalization )

# Think about 25 years advance from now. You will be married. You will have children,…

DISTINCT & LIMIT (Database)

import sqlite3 conn = sqlite3.connect('new.db') cursor = conn.cursor() # c…

ORDER BY & GROUP BY (Database)

# |||||||||||||||||||||||||||||||| ORDER BY |||||||||||…

Advanced Filter (Database)

# we already know about filtering way for a Database, which is 'Where' clau…

Database SQL Column (Constraints)

# |||||||||||||||||||||||||||||||| "NULL" ||…

Database

# # |\\ There are many kinds of Database management systems. like: MySQL, MongoDB,…

Database SQL