A family of Microsoft relational database management systems designed for ease of use.
If the table containing the order type column is, as I'd expect, the referenced table in a relationship between the form's current table and the table of order types, then you should have a foreign key column in the current table referencing the primary key of the order types table. You should then have a combo box control in the form, bound to the foreign key column, and listing the possible order types in its drop down list. If the values you want to show in the combo box's list are not those of the referenced primary key column, but another non-key column, then the first column of the combo box's RowSource query would be hidden by setting the dimension of the first column to zero in the combo box's ColumnWidths property. This can be set up manually, or you can use the combo box control wizard to add the control to the form.