Troubleshoot a PostgreSQL "Could not connect to server" Error

Learn how to troubleshoot one of the most common PostgreSQL errors, "Could not connect to server." There are several different variations of this error. [...]  

Tutorial: Use MongoDB to Store Comments

MongoDB is a popular NoSQL database which is perfectly suited for a task like storing comments on a high-traffic site where availability and speed are a priority. This step-by-step tutorial will walk through the process of using MongoDB to store and display user-generated comments submitted from a form which does not require a login. [...]  

Solve the PostgreSQL Error "psql: FATAL: database "root" does not exist"

Learn how to solve the common PostgreSQL error psql: FATAL: database "root" does not exist." New PostgreSQL users often encounter this error when first logging in to PostgreSQL. [...]  

How to Reset the MySQL/MariaDB Root Password, Import and Export Databases

Learn basic MySQL/MariaDB disaster recovery and preparedness: How to reset the root MySQL/MariaDB password, import databases from an exported MySQL dump file, and export databases into a MySQL dump file for backup. [...]  

Read More