Well this is a graduate level course so I wouldn't say it doesn't require any degree or work experience. In general the numbering scheme at CMU is xx-yyy where xx is the department code (15 for CS department) and yyy is the course number (where 500 and above is graduate level).

So, about where a junior programmer would be? And this would be a good course for them if they needed to implement database systems?

Seeing as we develop a database, this would be perfect