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 ...

Какие бывают фьючерсы?-What are futures?

 




There are several types of futures contracts in different markets. The speculator is advised to choose one or two contracts and specialize only in them in order to gain a deeper understanding of the market in order to make the right trading decisions. Consider the most common futures:


Precious metals. Traders buy and sell Gold and Silver futures. As a rule, investors, when working with these contracts, seek to hedge against high inflation or general financial uncertainty in the world.

Stock indices. These contracts depend on the movements of stock indexes such as Nasdaq or Dow Jones. On these movements, traders who have chosen futures for stock indices are trying to make money.

Currency futures. These are contracts to buy or sell a certain amount of a currency at a pre-agreed price expressed in another currency in the future.

Energy. These futures contracts include oil and natural gas and serve as a benchmark for world oil prices.

Agriculture. Here, trading is carried out in contracts for soybeans, corn and wheat. Weather conditions and seasonality can have a strong influence on them.

Treasury bonds and interest rates. Such futures contracts play the most important role in international financial markets, and the traders who work with them closely follow the actions of the US Federal Reserve.

Livestock. In this category, participants have the opportunity to speculate on the prices of livestock and pork. These prices are strongly influenced by supply and demand.