Open Source

PostgreSQL

PostgreSQL: a closer look at the object-relational database management system

The PostgreSQL database management system, also known to many as Postgres, has many decades of development behind it. It originally started as a project at Berkeley University in California. Today, the open source database continues to defy solutions from commercial competitors, since the development team is constantly working on its functionality and performance. But what exactly is PostgreSQL?...

How to Delete Empty Rows in Excel

Excel: Deleting Blank Rows – Made Easy!

If you regularly work with tables, you often encounter rows without content when reworking and restructuring them. Removing each of these rows by hand is often very tedious. However, Excel can find these blanks automatically. There are even several ways to delete blank rows in Excel. We will introduce two of them in the following.

Free dynamic DNS providers: An overview

The best free DynDNS providers

Trying to access your home computer, but don’t know how while working remotely? Dynamic DNS services (DynDNS) provide a solution by establishing a stable connection to your server regardless of a changing IP address. Find out what the best free Dynamic DNS services are and learn more about their advantages and disadvantages.

Free alternatives to Adobe Lightroom

Alternatives to Adobe Lightroom: editing images for free

Digital photography and image editing software allow both amateurs and professionals to create, edit, and archive stunning images with little effort. But you don’t always have to shell out for expensive packages in order to curate professional albums and optimize images. In this article, you’ll find a list of some of the best free alternatives to Adobe Lightroom that allow users to manage and...

FileZilla: tutorial for the FTP client program

How to use FileZilla: a tutorial on the popular FTP client

FileZilla is considered to be a standard software for transferring data between locally connected computers and online servers. The network protocol is able to transfer via FTP and its encrypted variants, SFTP and FTPS. We’ve created an overview of the client program’s features and break down the details of this program from installation to data transfer.

Excel SUBTOTAL function

Excel: Subtotals for your calculations

Excel functions generally calculate all values in their range – whether the cells are hidden or not. This is practical, as it does not change the final result. However, sometimes that is exactly what you want. If so, SUBTOTAL can help in Excel: Multiple calculations react to any existing filters and adapt the result accordingly.

How to change DNS server

How to change DNS server: Reconfiguring DNS entries

It can make sense to change DNS servers (typically that of the internet provider) for a number of reasons: One example is that it can enable faster access times on the World Wide Web. In this guide, you’ll find out why this is the case and how you can change DNS server on Windows 10, macOS, and other operating systems.

Excel: INDIRECT Function

Excel: The INDIRECT Function Explained

In Excel, we almost always work with cell references. Rather than entering values into formulas individually, we pull them from the cells of tables. The INDIRECT Excel function enables you to even obtain references from other cells. This can be helpful when working with multiple worksheets or when creating complex formulas, for example. We explain how to use INDIRECT in Excel.

Elasticsearch

Elasticsearch: the flexible search engine

If you work with large amounts of data, you’ll need a powerful search engine. Elasticsearch offers you a full-text search that you can configure so that it is perfectly tailored to your needs. But first you have to understand the principle behind it – what is Elasticsearch?. In this Elasticsearch tutorial we’ll explain the first steps in using the search engine, from installation to creating a...

Excel: ROUND Function

Excel: How to Round Properly

Excel allows you to perform complex computations. However, you may often want to simplify the results, either by rounding up or down. In Excel, you can round using a function, saving time and effort. You can use the ROUND function directly and in its simple form, or build it into complex formulas. So, how do you use it correctly?


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