Справка LibreOffice 7.5
The Tools menu of a database window.
Opens the Relation Design view and checks whether the database connection supports relations.
Opens the User Administration dialog if the database supports this feature.
Opens the Table Filter dialog where you can specify which tables of the database to show or to hide.
Select the tables that you want to filter in the Filter list.
If you select the topmost table in a hierarchy, all of the tables in the hierarchy are selected.
If you select a table that is at a lower level in the hierarchy, the tables that occur above it in the hierarchy are not selected.
Opens the SQL dialog where you can enter SQL statements.