CRUD – the most important database operations

CRUD: the basis for data management

It won’t take long for those looking to get into to software development to encounter the term CRUD. The acronym stands for the typical operations used for communicating with database systems; these normally form the basis of database management. But just how are these access functions for data management actually set up? And how much of role does CRUD play when it comes to the databases’...

GraphQL

GraphQL: flexible query language and runtime environment for your web API

Applications on the web need interfaces in order to exchange data. If you run a web project yourself and want to grant other programs access to certain data sets, an API (application programming interface) like this is essential. Established concepts such as REST or SOAP are often used in development – but there are alternatives, as GraphQL proves.

Sequence diagrams

Sequence diagrams: depicting UML message exchanges

Sequence diagrams help you depict the message flow within a system in clear detail. A UML sequence diagram is a good choice for anyone who wants to understand a specific application case well. In object-oriented programming, sequence diagrams are suitable for checking the logic of a system. We’ll present these diagram types in detail and explain how to create a sequence diagram.

Agile software development about

Agile development: what it’s all about

If you have ever dealt with modern working techniques, the term "agile development" is certainly already familiar to you. But most don't understand exactly what’s behind it. This is also due to the fact that agile software development itself does not want to be defined and only acts as an umbrella term. Nevertheless, we’ll explain its ways to you!

App and usability testing

Create your own app – Part 4: App and Usability Testing

Only a properly functioning application has any chance of success. Programming errors and a poor user experience may cause some users to uninstall the app without a second thought. As a result, extensive app testing prior to publication is vital. Functionality, performance, usability, and other tests serve as quality assurance tools. In addition to manual tests, there are also some automated tests...

Robo-advisor

Robo-advisors: what’s behind the virtual financial management?

Investing money in stocks, bonds, or commodities and doing nothing else but collecting the profits years later – this has been possible for some years now with automated asset management advisors called robo-advisors. The digital financial advisors offered by financial institutes and FinTech use algorithms to create a customized strategy for private investors, taking over the entire asset...

Class diagrams with UML

Creating class diagrams with UML

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...

UML: Unified Modeling Language

UML - a graphical-type modeling language

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's a hackathon?

Hackathons: intense and innovative programming retreats

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.

Enable JavaScript

Enable JavaScript: How to turn on the script language in your browser

It’s hard to imagine the modern web without JavaScript. Next to HTML and CSS, the programming language plays a decisive role in the implementation of user-friendly and attractive web projects. A website without scripts written in JavaScript that provides the desired amount of interactivity is hardly possible. In this guide, we explain why many users decide to block the language in their browser...


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