To view properties of minischema tables and columns:
If not already opened, open the minischema (see Opening a Minischema).
In the minischema work area, right-click the table object whose properties you want to view and select Properties.
The table properties are displayed in the General tab of the properties dialog box.
Click the Columns tab to view these column properties:
Whether a column is a key column
Column name
Column type
Whether nulls are allowed