Compilers principles techniques and tools 2nd edition pdf

What is compiler techniques and methodology?
The compiler is a program that takes as input a program written in high level language ( source language), and translates it into an equivalent program in other object language (target program ).
Target language may be another programming language, or the machine language of any computer..
What is the task of the compiler?
A compiler that supports the source programming language reads the files, analyzes the code, and translates it into a format suitable for the target platform.
Compilers that translate source code to machine code target specific operating systems and computer architectures..
Broadly, there are three types of Compilers: Single Pass Compilers.
Two Pass Compilers.
Multi pass Compilers.

What is compiler techniques and methodology?