Databases

This article offers two slick methods to rename a column in a MySQL table. Use ALTER TABLE command combined with the RENAME COLUMN clause for a swift resolution. The CHANGE clause offers more options and allows you to micromanage the renaming…

Keep your database servers separate from your public-facing web servers to improve security, performance, and flexibility. MySQL servers are initially set up to accept local connections. Use this tutorial to change these settings in the MySQL…

Once you install MariaDB, one of the first things you need to do is to create a new MariaDB user. This article explains how to create a MariaDB user, and then how to grant privileges to the newly created user.

Learn how to export a PostgreSQL table to a .csv file. This feature is especially helpful when transferring the table to a different system or importing it to another database application. The guide shows you how to use either the COPY or the /copy…

Save time and effort by managing different database systems with a single tool. Find out how to set up SQL Workbench to connect to a PostgreSQL database with four (4) easy steps. Use SQL Workbench to migrate data between your databases without the…

When adding data to a MySQL database, you may end up with duplicate rows. This article shows you how to find these instances and delete duplicate rows in MySQL. Create a test database, add data to it and practice identifying and removing duplicate…

Learn how to find the duplicate entries in your MySQL databases. The guide shows you how to use the GROUP BY, COUNT() HAVING, and INNER JOIN functions to locate the duplicate entries.

This tutorial shows you how to use Docker and an official MongoDB container image to deploy your databases. Additionally, it covers basic commands that allow you to interact with the MongoDB client effectively.

Your server's MySQL time zone and your own might be out of sync. Read this article to learn 2 ways of editing your MySQL time zone and make it easier for you to read server logs and data.

MySQL, the most widely used relational database management system can be installed on CentOS 8 from the default AppStream repository or from the official MySQL developer's repository. This article details both options and instructs how to secure…