Comparison between software engineering , system engineering and computer science in the term of course contents and importance for market place?

Software engineering is a field of computer system that concerns on the software life cycle from data collection up to software disturbing and maintenance. System Eng. Is concerning about whole system design and building, any kind of system that has both software and hardware with electrical operations. Computer science is a field that studies the computer system in both sides software and hardware. So we can say that computer science and software engineering are part of system engineering.