SQLiteDriver objects are created by SQLite(), and used to select the
correct method in dbConnect().
They are a superclass of the '>DBIDriver class,
and used purely for dispatch.
The "Usage" section lists the class methods overridden by RSQLite.
The dbUnloadDriver() method is a null-op.
# S4 method for SQLiteDriver
dbDataType(dbObj, obj, ...)# S4 method for SQLiteDriver
dbIsValid(dbObj, ...)
# S4 method for SQLiteDriver
dbUnloadDriver(drv, ...)
# S4 method for SQLiteDriver
dbGetInfo(dbObj, ...)