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 ...

What is this rating based on?

 What is this rating based on?




All the programming languages ​​that are presented in this material did not get here by chance, they are all really popular and in demand, which is proved by numerous indicators, indices and various analytical data.

All these data and indicators form special services, however, each of these services uses its own programming language ranking algorithm.

Someone is based on the frequency of language mentions in search engine queries, someone is based on the number of questions asked about a particular language in specialized forums, and someone is based on the number of projects implemented in a particular language.

In any case, separately, each of these ratings does not reflect the exact actual popularity of a particular programming language, since data from only one indicator is often taken as a basis. And some ratings simply contradict each other.

However, if we analyze all the sources, we can identify several languages ​​that are most often found in the top of each rating and we can conclude that they are really popular and in demand, in all areas, and not just in any one.

Thus, in order to simplify your task in analyzing all the necessary information, this material presents the TOP 7 programming languages, which is based on data from all popular official ratings and indicators for the previous year.

Data sources (official indicators, indexes and ratings of programming languages):

TIOBE - the index is based on data from search engines Google, Bing, Yahoo;
PYPL (PopularitY of Programming Language) - the rating is based on data from the Google search engine;
IEEE Spectrum - Interactive: The Top Programming Languages ​​- Based on 11 metrics from 8 sources: Google search, Twitter mentions, GitHub repositories, Stack Overflow questions, Reddit posts, Hacker News posts, Job openings on CareerBuilder and IEEE Job Site;
GitHub - based on the statistics of the use of programming languages ​​in repositories;
Stack Overflow - based on the number of questions related to the programming language;
W3Techs - based on the number of sites using a particular programming language;
Among other things, the frequency of mentions in vacancies on HeadHunter was taken into account. In some controversial moments, of course, personal preferences, knowledge and opinion were connected.