Ph.D. in Computer Science - Databases Body of Knowledge

A student has to take three courses as specified below and get at least two A's and one B in the three courses. 
Required courses:
CS 6400:  Database Systems Concepts and Design
CS 6422:  Database System Implementation
One out of the following three courses:
CS 8803:  Big Data Systems and Analytics 
CS 6675:  Advanced Internet Applications Development 
CS 6365:  Introduction to Enterprise Computing