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 ...

Choosing a rod with the right features

 


Choosing a rod with the right features

Rod action


This often used concept means the temporal characteristic of the bending of the rod under load. If, after removing the load, the rod returns to its previous shape in a split second, this is a very fast action. When it straightens out over a longer period of time, it is a slower build. In the case when the entire whip is bent, it will take longer to restore its shape after removing the load. Rods in which the entire whip is bent, including the handle, are called parabolic.


Based on the name itself, it is clear that the action is how the rod is “built”, from what material, what is its geometric shape and linear dimensions.


The determining factors for the system are the physical properties of the material used - specific gravity, resistance to compression and stretching. A properly built rod, if a weight is attached to its tip, bends smoothly, without fractures, starting from the handle, if any. The bend should not be uniform along the entire length, but increasing from the butt to the top, without sharp fractures and without straight, rigid sections.