Tutorials

Deleting your PayPal
Deleting my PayPal account – what do I need to know?
  • Online sales

You do not have to provide any reasons to delete your PayPal account: If you find that you do not need or want to use your account anymore, then that’s enough to delete it. To do this, you don't even need to contact the service team directly, because in your profile settings you’ll find the option to delete your PayPal account quickly and easily.

Deleting my PayPal account – what do I need to know?
Class diagrams with UML
Creating class diagrams with UML
  • Web development

Class diagrams are structural diagrams in the UML modeling language. The UML class diagram is suitable for visualizing system elements and their dependencies for object-oriented programming languages. If you are a modeler creating a class diagram, it is advantageous to adhere to the official notation and semantics. This is the only way to avoid misunderstandings. We will explain notation for the...

Creating class diagrams with UML
How to enable cookies in your browser
How do I enable cookies in my web browser?
  • Website creation

Cookies save user information during website access to improve the page’s user-friendliness or record customer behavior. They’re responsible for noting down login data, browser settings, and other useful information so that you don’t have to set everything up again each time you visit the same site. Cookies can be completely or partially enabled, or just enabled for particular websites. How to...

How do I enable cookies in my web browser?
SQL JOIN
SQL JOIN – queries across multiple data tables
  • Technical matters

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 JOIN – queries across multiple data tables
UML: Unified Modeling Language
UML - a graphical-type modeling language
  • Web development

If you need to run object-oriented programming, to represent a system clearly, and also make it accessible to external specialists, you may find the Universal Modeling Language to be ideal. UML is a modeling language, but has many other possible uses. Since the introduction of UML 2.0, UML diagrams are also suited to the graphical representation of non-computer-based concepts, such as use case...

UML - a graphical-type modeling language
Creating a Wikipedia page
Create your own Wikipedia page
  • Website creation

Want to create your own Wikipedia page? Here’s our guide for how to create your own Wikipedia page – and become part of the world's largest online encyclopedia!

Create your own Wikipedia page
Google Tag Manager
Google Tag Manager: the hub for your tracking and testing snippets
  • Web analytics

Tools for recording and analyzing user behavior are part of everyday life for website operators. Yet the more codes you need to embed and keep track of, the more difficult and time-intensive the task becomes. How can you keep track of everything? The Google Tag Manager offers the perfect answer. Here you will learn how the tool created by the search engine giant works and how you can make best use...

Google Tag Manager: the hub for your tracking and testing snippets
How to Disable Cookies
Disabling cookies: how to turn off cookies in your browser
  • Website creation

Cookies serve various purposes on the internet: primarily, they store user data in order to facilitate easy operation of web pages and to make certain web applications available. But they can also be used to track user activity and intrude on user privacy. There are therefore good reasons to either partially disable, i.e. allow them only on certain pages, or completely disable cookies. You can do...

Disabling cookies: how to turn off cookies in your browser
Sitemap
Sitemaps – Here’s what you need to know
  • Website creation

Sitemaps belong to the standard features of a website, but they seem to be gradually disappearing from the World Wide Web. Some online presences hide the navigation file or even forgo it completely. We explain why search engines like Google still give sitemaps a lot of attention, how important sitemaps are for SEO as a result, and how you can create sitemaps yourself – manually or with a sitemap...

Sitemaps – Here’s what you need to know
Integrating MailChimp into Wordpress: easily explained
Using MailChimp in WordPress: how it works
  • E-mail marketing

MailChimp and WordPress can be combined effectively. With the help of a plugin, you can integrate the registration form for newsletter campaigns directly on your WordPress website – no programming needed. We explain, step-by-step, how to connect MailChimp and WordPress and how to create a registration form.

Using MailChimp in WordPress: how it works