To store data with only two values more efficiently, use the Logical data type.
Logical data is stored as True (.T.) or False (.F.).
For specifications about the Logical data type, see Visual FoxPro Data and Field Types.
See Also
Tasks
How to: Choose Data TypesReference
CREATE TABLE - SQL CommandLogical Operators
Microsoft Visual FoxPro 9 SP2 Help file, VFPX Edition v1.08