How to Install and Configure ClickHouse on Ubuntu 20.04

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What is ClickHouse?

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ClickHouse is an open-source column-oriented DBMS (or database management system) primarily used for OLAP (or the Online Analytical Processing of queries). It is capable of blazing fast generation of real-time analytical data and reporting utilizing SQL queries. It is fault tolerant, scalable, highly reliable and contains a feature rich tool set.

In a regular database, data is stored in tables, columns, and rows. In a table, the related values are physically stored side by side in one row, which is critical to how it operates. This is how most string type databases work.

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How to Install ArangoDB on Ubuntu 20.04

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What is ArangoDB?

ArangoDB is a high availability and scalable multi-model NoSQL database that natively works with graphs and documents and includes a full-text search. It is a free, open-source software developed and maintained by ArangoDB GmbH. The system supports three different data models with one database core and includes a unified query language called AQL (ArangoDB Query Language). This query language is declarative and allows the combination of different data access patterns in a single query. The software can be implemented on multiple systems, including Windows, macOS, Linux, Kubernetes, Docker, and on our Managed Cloud. It has a strong community support base on GitHub, StackOverflow, Google Groups, and Slack. 

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Connecting to MySQL Using Python

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In this article, we will be discussing how to connect to MySQL using Python. Python is one of the most productive and widely used programming languages in use today. Its simple and elegant syntax makes it ideal for new programmers, while experienced programmers enjoy the extensive list of available modules and functionalities. 

MySQL is a robust open-source SQL-based, relational database management system that is used in many software programs and web servers. This article aims to show how to connect to use Python to connect to MySQL and perform some basic tasks. 

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How to Create and Use MySQL Views

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What is a MySQL View?

A MySQL view is simply an ordinary database object that can save SQL query writers a lot of time when used correctly. A view is a stored query that a user can reference just like a table. Many times users will find themselves using the same base query over and over to solve multiple problems. Views are a way of quickly saving that query and referencing it later.  

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Grant Permissions to a MySQL User on Linux via Command Line

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Preflight Check

  • These instructions are intended for granting a MySQL user permissions on Linux via the command line
  • I’ll be working from a Liquid Web Core Managed CentOS 6.5 server, and I’ll be logged in as root.
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Becoming Familiar with Databases in PhpMyAdmin

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This tutorial assumes you’ve already logged in to PhpMyAdmin. Now let’s familiarize ourselves with databases and PhpMyAdmin.

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MySQL Performance: MySQL/MariaDB Indexes

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Data in a MySQL/MariaDB database is stored in tables. A simple way of thinking about indexes is to imagine an extensive spreadsheet. This type of system is not always conducive to quick searching; that’s where an index becomes essential. If there is no index, then the database engine has to start at row one and browse through all the rows looking for the corresponding values. If this is a small table, then it is no big deal, but in larger tables and applications where there can be tables with millions and even billions of rows, it becomes problematic. As you can imagine, searching through those rows one by one will be time-consuming, even on the latest hardware. The solution is to create an INDEX (or more than one) for your data.

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Remove Permissions for a MySQL User on Linux via Command Line

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Preflight Check
  • These instructions are intended for revoking a MySQL user permissions on Linux via the command line
  • I’ll be working from a Liquid Web Core Managed CentOS 6.5 server, and I’ll be logged in as root.
Continue reading “Remove Permissions for a MySQL User on Linux via Command Line”