Add new tables and columns
You can add tables and columns to a meta-schema.
Right-click in the background of the meta-schema diagram. Select Add Table. A new table with a single column is added to the diagram.
Right-click on the table and select Add Column to add an additional column. Repeat for as many columns as needed.
Set properties for the table and each column by selecting the item in the diagram or Structure view and editing its properties in the Properties view.