Here we will learn how to create the simplest database – a table, in the form of a block (there is a video at the end)
To create a database, open the block list and scroll down to the DATABASE section

Inline-
and Full page
databases differ only in how they look. Inline databases
look like a block within a page, while Full pages databases
look like a separate page. Soon we will learn how to turn one type into another.

You can also create a database on an empty page:

Video tutorial: