Language Processors
Indicate which of the following is not true about 4GL?

All of these
Many database management system packages support 4GLs
4GL does not support a high-level of screen interaction
A 4GL is a software tool which is written, possibly, in some third generation language

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Language Processors
In analyzing the compilation of PL/I program, the term "Machine independent optimization" is associated with

recognition of basic elements and creation of uniform symbols
use of macro processor to produce more optimal assembly code
recognition of basic syntactic constructs through reductions
creation of more optional matrix

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