Emptying a databases involves dropping (deleting) all its tables. The easiest way to do this is to drop and recreate…

Installation These instructions are for Mac OS: First install homebrew. Never use sudo for brew. Install Python3. The installation comes…

NoSQL is not one technology. It refers to a wide variety of different database technologies that address scale and agility…

Character: set of symbols and encodings Encoding: set of values assigned to characters Collation: set of rule for comparing a character set Suppose you have…

The join clause allows us to combine SQL tables. Tables can be combined in different ways. Think on inner join…

The Following SQL query will list all tables in a MySQL database and also list the row counts for each.…

The goal of database normalization is to reduce data redundancy and to improve data integrity. This is done by organizing…