A BANG file
(balanced and nested grid file
) is a point access method which divides space into a nonperiodic grid. Each spatial dimension is divided by a linear hash. Cells may intersect, and points may be distributed between them.
In some early ICL mainframe
computers, a bang file
was a temporary data storage file whose name began with a !
character (which is sometimes nicknamed "bang") and automatically deleted when the run or user session ended.