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

Many database management system packages support 4GLs
All of these
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
Assembly code data base is associated with

assembly language version of the program which is created by the code generation phase and is input to the assembly phase
a permanent table of decision rules in the form of patterns for matching with the uniform symbol table to discover syntactic structure
a permanent table which lists all key words and special symbols of the language in symbolic form
consists of a full or partial list or the tokens as they appear in the program. Created by Lexical analysis and used for syntax analysis and interpretation

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Language Processors
An Interpreter is

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

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