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.
Combining different application systems has become increasingly important over the past few years. This trend is especially due to the increasing number of web applications being developed. In order to react to this trend, many different web services were developed that make data transfer across multiple systems possible. The Representational State Transfer (REST) is an architectural style that...
The internet and World Wide Web have brought humanity closer together – it has never been easier to share information, experiences, and memories than it is today. More and more often, the web also serves as a platform for further education. So-called webinars - i.e. online seminars – are replacing classic face-to-face lectures. Companies and teachers now communicate knowledge online instead of in...
For computer systems to be able to communicate with each other and exchange information, they need common ground, just like humans must share a common language. But computers don’t rely on foreign language lessons, and instead only need the appropriate network protocol to successfully communicate. This provides guidelines and structures for the data transfer, and so plays a decisive role in the...
When networking a computer system, protocols play an important role. An example is the Internet Protocol, which was published in a first specification in 1981, and is the indispensable basis for the smooth sending and receiving of data packets. But what is behind the RFC standard? And how does the internet protocol actually work?
What exactly is the Scrum framework? If you deal with agile project management, you can’t ignore Scrum. Originally used in software development, Scrum has also found a home in many other industries. Fans of the model rave about greater efficiency and transparency, and praise the framework’s open approach. Are you also considering establishing Scrum teams in your company? We explain the most...
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...
Every day we work with text on PCs, smartphones, tablets and other computer equipment using our keyboards. We expect letters, numbers, and characters to appear on the monitor before us. The fact is that there is a decades-old coding system behind this everyday function. Since the 1960s, ASCII has determined how computers interpret our input. We have prepared a practical ASCII table to help you...
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...
What is a hackathon, and what happens at one? Very little sleep, innovative ideas, and a lot of hard work! In addition to a definition of a hackathon, and an explanation of how it works, we also provide a few examples of hackathons in the US, as well as some of the amazing projects that came from them, such as mental health apps, and organ transplant aides.
