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

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

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Language Processors
A base register table

is used to remember which of the general-purpose registers are currently available as base registers, and what base addresses they contain
allows multiple programs to reside in separate areas of core at the same time
allows the programmer to write base registers and displacements explicitly in the source program
is a term that refers to the control programs of an operating system

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Language Processors
A compiler is

is a program that appears to execute a source program as if it were machine language
program that accepts a program written in a high level language and produces an object program
a program that automate the translation of assembly language into machine language
a program that places programs into memory and prepares them for execution

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Language Processors
A loader is

program that accepts a program written in a high level language and produces an object program
is a program that appears to execute a source program as if it were machine language
a program that automate the translation of assembly language into machine language
a program that places programs into memory and prepares them for execution

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Language Processors
In analyzing the compilation of PL/I program, the term "Lexical analysis" is associated with

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

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