1.) State Transition Diagram for the Expert Tutoring Center Customer System.

Expert Tutoring Center Customer System

The Expert Tutoring Center provides tutoring sessions for customers in the Chicago suburbs. After a rigorous evaluation process, tut0rs are hired to provide tutoring for one subject area. (The hiring process is outside the scope of the system you are documenting). In addition to subject area, other information recorded about tut0rs includes an ID, TLName, TFname, address, email, and phone.

A customer creates an account by providing first and last name (CLName), DOB (date of birth), email address, and phone number. The system assigns a unique customer ID (record number). The system displays a list of regional schools (SchNumber, name, and city) from the school file. The customer enters the SchNumber and this is recorded. For home schooled customers this field is left blank.

To register for a tutoring session, the customer enters email address, the subject which will be covered in the session and the preferred date/time. At this time the tutoring session record is created and stored with a session ID and status of requested. The system sends this session request information to all tut0rs with the requested subject expertise. When a tut0r accepts, the tutoring session is scheduled and the assigned tut0r ID is added to the session record and the customer is notified. The customer can separately register for additional tutoring sessions for the same or different subjects. Each tutoring session is taught by one tut0r and covers only one subject.

When the session is complete the tut0r records the outcome and the status is changed to completed.

Every Sunday at 10 PM the system creates the Weekly Tutoring Report and sends it to the Managing Director. (Assume that the system has created a temporary file called Weekly Records that contains the fields shown below for the tutoring sessions for the past week, sorted by Tut0r Last Name.)

Tutoring session records are stored in the system for 1 year and then moved to a data archive. After 10 years records are deleted from the archive.

Weekly Tutoring Report

T LName	C LName	Session ID	Date/Time	Subject	Outcome
Curie	Davies	00202	12/1 4:30 PM	Chemistry	Not studying
Curie	Riley	00216	12/1 6:00 PM	Chemistry	Improving
Curie	Davies	00287	12/2 4:30 PM	Chemistry	Hopeless
Curie	Firestone	00398	12/5 4:30 PM	Chemistry	Good progress
					Tut0r Total	4
Einstein	Riley	00209	12/1 4:00 PM	Calculus	Excellent
Einstein	Baker	00234	12/1 6:30 PM	Calculus	Excellent
Einstein	Baker	00301	12/3 5:00 PM	Calculus	Not prepared
					Tut0r Total	3
Hawking	Firestone	00203	12/1 4:30 PM	Physics	Good progress
Hawking	Rubble	00225	12/1 5:30 PM	Physics	Impossible
Hawking	Firestone	00268	12/2 2:30 PM	Physics	Trying
Hawking	McCarthy	00312	12/3 6:00 PM	Physics	Okay
					Tut0r Total	4
Turing	Harris	00356	12/4 4:00 PM	Calculus	Getting better
Turing	Russell	00367	12/4 7:00 PM	Calculus	Needs practice
					Tut0r Total	2
					GRAND TOTAL	13

Here is a sample of some of the tutoring session data:

Session ID	. . .	Status	Tut0r ID	Outcome
00456		Completed	Tu9873	Needs practice
00457		Completed	Ha3426	Excellent
00458		Scheduled	Ha3426
00459		Scheduled	Ei7777
00460		Requested