Any object implementing the IDataValue interface allows you to work with data via these data types, which wrap all data types available in a database system.
| Name | Sequel Name | Comment |
| String | sqlString | Double-byte coded long UNICODE (WideString, BSTR) string |
| Integer | sqInteger | 32-bit signed integer |
| Double | sqlDouble | 80-bit signed real number |
| Boolean | sqlBoolean | True or false |
| Date-Time | sqlDateTime | The integral part of a Date-Time value is the number of days that have passed since 12/30/1899. The fractional part of a Date-Time value is fraction of a 24 hour day that has elapsed. This is also the standard OLE 2.0 automation data type. |
| Binary Data | sqlBinary | Any data in a raw format |