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 ...

How to start mining cryptocurrency from scratch-Как начать майнить криптовалюту с нуля

 



The popularity of mining in 2021 is due to a noticeable increase in the cost of a number of cryptocurrencies. Because of this, the decision to become miners is increasingly chosen by both large investors and ordinary PC users. Today we will tell you how to start mining cryptocurrency.


Beginners who start from scratch should first figure out how to mine cryptocurrency, how to choose a coin, how to mine it, equipment and software. And also - get acquainted with the basic terms for this type of activity:


"blockchain" - a record of all transactions in chronological order;

"hash" - the result of the hash function, presented as a string, providing the connectivity of the blockchain;

"hashrate" - a unit of computing power for a certain cryptocurrency;

"rig" - one unit of equipment intended for mining;

"farm" - a group of rigs combined into one system;

"pool" or "mining pool" - a server that receives a large task and divides it into several small ones, for each member of the group.

Mining itself is a mathematical calculation that confirms transactions. Their result is finding a block for which a reward is issued. And miners are those who mine cryptocurrency, and sometimes programs for obtaining digital assets.