When designing an SQL database, there may be cases where you want to impose restrictions on what data can be added to certain columns in a table. SQL makes this possible through the use of constraints. After applying a constraint to a column or table, any attempts to add…
The MySQL Cluster distributed database provides high availability and throughput for your MySQL database management system. This tutorial demonstrates how to install and configure a 3 node MySQL Cluster on Ubuntu 18.04 servers.
This article provides a real-world example of using Docker Compose to install an application, in this case WordPress with PHPMyAdmin as an extra. WordPress normally runs on a LAMP stack, which means Linux, Apache, MySQL/MariaDB, and PHP. The official WordPress Docker image includes Apache and PHP for us, so the only part we have to worry about is MariaDB.
Melissa Anderson escribió una versión anterior de este tutorial. MongoDB, también conocido como Mongo, es una base de datos de documentos de código abierto que se utiliza en…
A PostgreSQL database is a robust and flexible choice for your Ruby on Rails application. In this tutorial, you will set up a Ruby on Rails development environment connected to a PostgreSQL database on an Ubuntu 20.04 server. You will install and configure PostgreSQL, then test your setup by creating a Rails application that uses PostgreSQL as its database server.
One of the biggest advantages of using an ORM system is the ability to manipulate rows in a database table as objects within your codebase. Eloquent provides several methods that can be accessed directly from models to query the database and filter results without having to write SQL statements. In this guide, you’ll learn more about how to make database queries using Eloquent models.
Whether you’re adding more space, evaluating ways to optimize performance, or looking to take advantage of other storage features, this tutorial will guide you through relocating PostgreSQL’s data directory on an Ubuntu 20.04 server.
Occasionally, MySQL tables can become corrupted, meaning that an error has occurred and the data held within them is unreadable. Attempts to read from a corrupted table will usually lead to the server crashing. Some common causes of corrupted tables are: The MySQL server stops in middle…
![Installieren von MySQL unter Ubuntu 20.04 [Schnellstart] — step-by-step Linux tutorial on Progressive Robot](https://www.progressiverobot.com/wp-content/uploads/2026/05/how-to-install-mysql-on-ubuntu-20-04-quickstart-de-81811-featured.png "Installieren von MySQL unter Ubuntu 20.04 [Schnellstart] 9")
MySQL ist ein Open-Source-basiertes Datenbank-Managementsystem, das üblicherweise als Teil des beliebten LAMP-Stacks (Linux, Apache,…
ClickHouse is an open-source, column-oriented analytics database created by Yandex for OLAP and big data use cases. In this tutorial, you’ll install the ClickHouse database server and client on your machine. You’ll use the DBMS for typical tasks and optionally enable remote access from another server so that you’ll be able to connect to the database from another machine.
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