TDBEdit is a data-aware version of an edit box component. TDBEdit displays the current value of a data field to which it is linked and permits it to be edited using standard edit box techniques. 

For example, suppose CustomersSource is a TDataSource component that is active and linked to an open TClientDataSet called CustomersTable. You can then place a TDBEdit component on a form and set its properties as follows:

• DataSource: CustomersSource
• DataField: CustNo

The data-aware edit box component immediately displays the value of the current row of the CustNo column of the CustomersTable dataset, both at design time and at runtime.