6. Troubleshooting "PostgreSQL: role is not permitted to log in" Error
   This error message indicates that you're trying to connect to a PostgreSQL database with a user account (role) that doesn't have the necessary permissions to log in
7. Connecting to MySQL from the Command Line: Example Codes
   Install MySQL:If you haven't already, download and install the MySQL server and client software from the official MySQL website ([invalid URL removed])
8. Understanding PostgreSQL User Authentication Errors
   Incorrect username: The username you provided in your connection string or authentication credentials does not match the actual username of the user account in the PostgreSQL database
9. MySQL Root Password Set, But Login Without Password Possible? Understanding Authentication and Solutions
   In MySQL (specifically MariaDB version 10. 0.29), you've set a password for the root user, but you're still able to log in without entering a password
10. Securing MariaDB: Enabling Password and Unix Socket Authentication (for educational purposes only)
    MariaDB: An open-source relational database management system (RDBMS) similar to MySQL.root user: The most privileged user account in MariaDB
11. Authentication Fundamentals: Securing Your PostgreSQL Data
    A database is a structured collection of data that allows for storage, retrieval, and management of information. In PostgreSQL