How to connect to PostgreSQL database using pgAdmin 4?

 How to connect to PostgreSQL database using pgAdmin 4? In order to set up a connection to the PostgreSQL database, run pgAdmin 4, for example, from the Start menu. As a result, pgAdmin 4 will start. Then click the menu "Object->Create->Server" or right-click on the item "Servers" and select "Create->Server". The server connection settings window will open. On the General tab, we invent and enter the name of our server in the Name field. On the Connection tab, enter the server IP address, username, password, and if you want, you can check the “Save password?” to save the password and not to enter it every time you connect. If the standard port (5432) of the PostgreSQL server has been changed, then you also need to change it here. Press the "Save" button. Note! The PostgreSQL server must be installed, configured and running. We considered an example of installing and configuring PostgreSQL DBMS on Linux Debian in the material “Installing ...

Opera Browser Review

 Opera Browser Review




Opera Browser Overview

Screenshot 1


Opera (browser) is free web browsing software (web browser) maintained and developed by Opera Software. This browser appeared back in 1994, and is currently one of the most popular browsers in the world, although its share in the browser market (2%) is much lower compared to the leaders. Opera is also popular in Russia and its share is even slightly higher than the world average of about 3.5%.


The Opera browser is implemented under such operating systems as: Windows, Linux and macOS. There are also versions for mobile devices based on such popular systems as: Android and iOS.


Opera supports many languages, including Russian, has a simple and fairly user-friendly interface.


Official website - www.opera.com


Opera system requirements

The Opera browser supports the following versions of operating systems:


Windows 7 or higher;

OS X Yosemite 10.10 or higher;

Ubuntu 16.04 64-bit or higher;

Opera can also be installed on other Linux distributions such as openSUSE, Fedora and others.

Opera requires at least an Intel Pentium 4 or AMD Athlon 64 processor (newer processors will work, of course).


Where to download the Opera browser?

Such popular software on the Internet can be downloaded almost anywhere, but it is recommended to download any programs, including Opera, only from official sites. Therefore, we will download Opera from the official download page.


In order to download Opera for Windows, go to the download page of the official website - http://www.opera.com/ru/computer/windows


Then just click the "Download Now" button, in this case we will start downloading the web installer, the file size will be no more than 1.5 megabytes, but if you need to download the full distribution in order to install Opera later or on another computer, then click to the link "Download package for offline installation". The file size in this case will be much larger (about 43 megabytes). Let's take a look at the installation using the web installer, click "Download Now".




As a result, we have downloaded the file "OperaSetup.exe" with a size of a little more than a megabyte