Online Documentation for SQL Manager for InterBase/Firebird
Defining array
A field can be an array of one of standard data types (except BLOB). To set array parameters, specify the data type and then select the Array tab of the dialog.
To add/edit an array dimension, click the Add Dimension / Edit Dimension button to call the Dimension Editor dialog.
Use the spinner controls of the dialog to set the lower/upper bounds.
To delete a dimension, select one in the list and click the Delete Dimension button.