Database

Securing servers with Fail2ban

Securing your server with Fail2ban

For server operators, security is of the utmost importance. Only those who have developed and set up a foolproof defense strategy are ready for drastic situations. As well as regular protection mechanisms, like security software, backups, and encryption, there are also some useful tools and frameworks that may come in handy in the fight against intruders. We have laid out essential details on the...

Managed cloud hosting: customized servers

Managed cloud hosting: flexible server structures at the click of a button

More and more website operators are turning to managed cloud hosting as a solution for their server environment. This option promises flexible scalability of required resources in real time, along with a wide range of services offered by the provider including the installation, maintenance, and protection of the hosting platform. So how does managed cloud hosting work? Find out what services...

A comparison of data mining tools

Data mining tools for better data analysis

In the digital age, it’s normal for data from small and medium-sized companies to grow to unmanageable amounts. Data mining tools are used to extract desired information from data sets. These extract recurring patterns from the data and make them available to marketers and statisticians. We have compared the most important data mining software and show where their strengths and weaknesses lie.

Database normalization

Less redundancy thanks to database normalization

Redundancies occur when various details are combined in a single database table. These redundancies use up storage capacity and prevent efficient data processing. The relational database model offers strategies for splitting datasets among several linked tables, in a process called database normalization. Find out what it’s all about with practical examples.

SQL JOIN

SQL JOIN – queries across multiple data tables

A major strength of the relational database model is that information is stored in separate database tables structured according to semantic relationships. This concept, known as normalization, is the basis for data storage that is as redundancy-free as possible, but requires a mechanism with which data from different tables can be merged for queries. The different JOIN types provide users with...

SQL OUTER JOIN

SQL OUTER JOIN

OUTER JOINs are queries that take place across several database tables. There are LEFT OUTER JOINs, RIGHT OUTER JOINs and FULL OUTER JOINs. Each of these JOIN types has a larger result set than the INNER JOIN. But what exactly is the difference between the individual types? Here, we will distinguish OUTER JOINs from INNER JOINs, compare the different subtypes of OUTER JOINs and explain how they...

Set up ownCloud with Raspberry Pi

Creating a Raspberry Pi cloud server with owncloud

With ownCloud software, your Raspberry Pi can be used as a private cloud, performing the same kind of tasks as clouds from major providers such as Google, Amazon, and Dropbox. Cost-effectiveness is just one of many the benefits of creating your own personal cloud; another is the privacy and security of your data. This step-by-step Raspberry Pi cloud tutorial explains how to set up ownCloud.

Creating backups with MySQLDumper

MySQLDumper: from installation to backup

“Data is the new oil!”. So when it comes to online businesses, loss of data means loss of capital. Important and sensitive data should be backed up at regular intervals. Thanks to free programs such as MySQLDumper you can create MySQL database backups in minutes! Once installed, you can use the software to automatize and administer backups.

What are quotas?

Quotas – storage for web space and e-mail

Did you encounter the word 'quota' from your web space provider or as part of mail hosting and wonder what is it? When does this storage limit come into play? We show you when and why quotas are used and how to differentiate between the different types.

CMS without database – a useful alternative?

CMS without database: the simple solution for small web projects

Do you know any content management systems without databases? These simple CMS systems are usually free, can be downloaded online, and can often be extended and adjusted to the user’s needs. Despite these advantages, are simple CMS platforms really a serious alternative to the classic CMS giants Drupal, Joomla and Typo3, which are linked to databases such as MySQL or MariaDB?


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