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?

 




Some rankings are based on the frequency of mentions in search engine queries, ie. if people are more likely to search for information on the database on the Internet, then we can conclude that this database is popular. And some are guided by the number of questions asked on a specific database in specialized forums, i.e. if more questions are asked about working with a particular database, it means that a lot of people use it, and it is popular.

In any case, such ratings, as, indeed, the ratings of programming languages, do not reflect the exact actual popularity of a particular DBMS, since they are based on some one indicator. And as a result, the ratings simply contradict each other.

However, if we analyze all the sources, we can identify several databases that are most often found in the top of each rating, especially since the composition of the TOP databases in all ratings is approximately the same, only the positions of the DBMS are different.

Based on all these sources, it can be concluded that certain databases are indeed popular by all indicators, and not just by any one.

Thus, in order to simplify your task in analyzing all the necessary information, this material presents the TOP 5 DBMS, which is based on data from all popular official ratings and indicators for the previous year.

Data sources (official indicators and DBMS ratings):

PYPL (PopularitY of Programming Language) - the rating is based on data from the Google search engine;
Stack Overflow - based on the number of questions related to the database;
DB-Engines - this rating is based on many indicators:
Data from search engines Google, Bing and Yandex;
Number of questions on Stack Overflow and DBA Stack Exchange;
The number of job offers on Indeed and Simply Hired that mention the system;
The number of profiles on professional networks LinkedIn and Upwork that mention the system;
The number of mentions on Twitter.
Among other things, data from RUSSOFT was taken into account, which conducted special surveys of software companies about the programming tools used, and in particular the DBMS.