The UserMinorVersion property indicates the user-defined minor version number of the table. DBISAM allows you to assign a user-defined major and minor version number to any table that can aid the database developer in tracking application-specific structure information. This is especially useful for determining whether a table has the correct structure for the current release of an application. The major version number can be retrieved using the UserMajorVersion property.
This property is read-only, you must alter the structure of a table in order to change it. Also, this property does not require that the table be open in order to return a value. This allows the the property to be examined without opening the table.