Mosquitto_pub the connection was lost mosquitto. conf

Hi plz 11 ! when planning a table, what step comes first: "define the column headers" or "calculate the number of columns/rows"? a. calculate the number of columns/rows b. define the column headers

What is the difference between the internet and the world wide web?

Which type of entity describes a fundamental business aspect of a database? a. linking b. lookup c. domain d. weak