Raize Components has a TRzDbComboBox where you have separate lists for Items and Values.
From the help:
The TRzDBComboBox does support a Values property, which can be used to define a list of associated values to be stored in the selected database field instead of the string values maintained in the Items list. For example, the Items list could be set up to contain the following items: Visa, MasterCard, American Express; while the Values list would contain the following values: VISA, MC, AMEX. If the user selected the American Express item in the drop down, the AMEX value would be stored in the database table.
2
solved TDbLookupComboBox or equivalent control with a set of fixed values?