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| %Driver | The names of all registered file drivers. |
| %DriverDLL | The name of the driver's .DLL file. Dependent on %Driver. |
| %DriverLIB | The name of the driver's .LIB file. Dependent on %Driver. |
| %DriverDescription | A description of the file driver. Dependent on %Driver. |
| %DriverCreate | Contains 1 if the driver supports the CREATE attribute. Dependent on %Driver. |
| %DriverOwner | Contains 1 if the driver supports the OWNER attribute. Dependent on %Driver. |
| %DriverEncrypt | Contains 1 if the driver supports the ENCRYPT attribute. Dependent on %Driver. |
| %DriverReclaim | Contains 1 if the driver supports the RECLAIM attribute. Dependent on %Driver. |
| %DriverMaxKeys | The maximum number of keys the driver supports for each data file. Dependent on %Driver. |
| %DriverUniqueKey | Contains 1 if the driver supports unique (no DUP attribute) keys. Dependent on %Driver. |
| %DriverRequired | Contains 1 if the driver supports the OPT attribute. Dependent on %Driver. |
| %DriverMemo | Contains 1 if the driver supports MEMO fields. Dependent on %Driver. |
| %DriverBinMemo | Contains 1 if the driver supports the BINARY attribute on MEMO fields. Dependent on %Driver. |
| %DriverSQL | Contains 1 if the driver is an SQL driver. Dependent on %Driver. |
| %DriverOEM | Contains 1 if the driver supports the OEM attribute. Dependent on %Driver. |
| %DriverType | All data types supported by the driver. Multi-valued. Dependent on %Driver. |
| %DriverOpcode | All operations supported by the driver. Multi-valued. Dependent on %Driver. |