
Systems testing and implementation
5
Use
of
non-procedural
code;
in other words their commands are about
what to do. Third generation languages use procedural code, i.e,
how to do it. The 'what' is automatically translated into 'how'
without programmer or user intervention.
6 Sensible default
assumptions.
4GL users are often allowed to omit
statements, and rely on the systems default assumptions. The help
facility provided will often indicate what the default assumption
is.
If we widen the scope of 4GLs to include the various programming
aids we could make reference to:
1 Menu
generators
which can create a VDU screen menu auto-
matically. Al ...