Implementing Source Tables Perform this procedure to activate columns in a table. Implement source tables Click the Data Sources tab. Double click the data source you want to use on the left pane. On the right pane, right-click a table, then click Properties. Click Views > Columns. Select the columns you want to activate. - or - To activate all columns, click Column Tasks > Make all columns active. Click OK. Compile the object to implement the changes you made. On the left pane, right-click the table whose columns you activated, then click Compile. - or - To compile all objects in the data source, right-click the data source, then click Compile all objects. Click Start Compile. Changes are now applied to the table you modified. Note: Compiled objects are marked with circled check marks.