Source : Free On-Line Dictionary of Computing

boundary value analysis
     
         A test data selection technique in which values
        are chosen to lie along data extremes.  Boundary values
        include maximum, minimum, just inside/outside boundaries,
        typical values, and error values.  The hope is that, if a
        systems works correctly for these special values then it will
        work correctly for all values in between.
     
        (1996-05-10)