Database

1. Connecting to PostgreSQL Start PostgreSQL Service sudo systemctl start postgresql Access PostgreSQL Shell psql -U postgres -U – Specifies the user (default is postgres) Exit psql: \q Connect to …

1. Connecting to MongoDB Start MongoDB mongod Connect to MongoDB Shell mongosh Connect to a Specific Database mongosh <database_name> Show Current Database db 2. Database Management List All Databases show …

1. SQL Syntax Overview SQL (Structured Query Language) is used to manage and manipulate databases. 2. Database and Table Management 1. Create a Database CREATE DATABASE my_database; 2. Delete a …