$2-44.$ Virtual Campus $($VC$)$ is a social media firm that specializes in creating virtual meeting places for students, faculty, staff, and others associated with different college campuses. VC was started as a student project in a database class at Cyber University, an online polytechnic college, with headquarters in a research park in Dayton, Ohio. The following parts of this exercise relate to different phases in the development of the database VC now provides to client institutions to support a threaded discussion application. Your assignment is to draw an ERD to represent each phase of the development of the VC database and to answer questions that clients raised about the capabilities $($business rules$)$ of the database in each phase. The description of each phase will state specific requirements as seen by clients, but other requirements may be implied or possibly should be implemented in the design slightly differently than the clients might see them, so be careful to not limit yourself to only the specifics provided.