Select the database and the table or query containing the data that you want to use.
You can only select databases that are registered in LibreOffice. To register a data source, choose LibreOffice - PreferencesTools - Options - LibreOffice Base - Databases.
Select the database that contains the data source that you want to use.
Select the data source that you want to use.
Click the source type of for the selected data source. You can choose from four source types: "Table", "Query" and "SQL" or SQL (Native).