courses

Contains all the courses in the iPeer instance.

Column	Type	Description	Foreign Key to table...
id	integer	Primary_Key
course	string	the course number, ex: APSC 123
title	string	a very short course description, ex: Academic Writing
homepage	string	a link to the course. Must start with http:// or https://
self_enroll	emun(on, off)	not fully implemented. The UI exists to modify this value, but no effect linked to it can be found in code
password	string	an MD5 hash of the user password.
record_status	enum(A,I)	either 'A' or 'I', representing active or inactive. Not always checked by code.
creator_id	integer	the ID of the user who created this course.	users
created	date	a date entry for this entry's creation.
updater_id	integer	the last user's ID who changed this record.	users
modified	date	the last time of modification.
instructor_id	integer	unused, as far as I can tell. The course-instructor is a many-to-many relationship is handled by the user_courses table.

evaluation_mixevals

A student's evaluations are put here, for the mixed evaluation type. Each evaluator-evaluate pair is recorded here.

Column	Type	Description	Foreign Key to table...
id	integer	Primary_Key
evaluator	integer	The user submitting the evaluation. They are evaluating other users.	users
evaluatee	integer	The user being evaluated.	users
score	floating	The total given by the evaluator to the evaluatee. (?)
comment_release	integer	Are this entry's comments release to be viewed by other users?
grade_release	integer	Are this entry's grades release to be viewed by other users?
grp_event_id	integer	Points to the group_events entry this entry is a part of.	group_events
event_id	integer	Points to the event that the above group_event entry is part of.	events
record_status	enum(A,I)	either 'A' or 'I', representing active or inactive. Not always checked by code.
creator_id	integer	the ID of the user who created this course.	users
created	date	a date entry for this entry's creation.
updater_id	integer	the last user's ID who changed this record.	users
modified	date	the last time of modification.

evaluation_mixeval_details

It seems that for each answer to a mixed evaluation question, and entry in this table is generated.

Column	Type	Description	Foreign Key to table...
id	integer	Primary_Key
evaluation_mixeval_id	integer	The ID of the evaluation_mixeval this question answer belongs too.
evaluation_mixeval table.
question_number	integer	The question being answered
question_comment	text	A textual answer to the question, if present. NULL otherwise.
selected_lom	integer	Doesn't seem to be used. All entries set at 0. (?)
grade	floating	A grade that the user gave when answering the question. Set to 0.0 if a textual question.
record_status	enum(A,I)	either 'A' or 'I', representing active or inactive. Not always checked by code.
creator_id	integer	the ID of the user who created this course.	users
created	date	a date entry for this entry's creation.
updater_id	integer	the last user's ID who changed this record.	users
modified	date	the last time of modification.

evaluation_rubrics

Holds all the submissions of evaluatee-evaluator pairs.

Column	Type	Description	Foreign Key to table...
id	integer	Primary_KeyNot used in this table (All 0's) (?)
evaluator	integer	The user submitting the evaluation. They are evaluating other users.	users
evaluatee	integer	The user being evaluated.	users
general_comment	text	A general comment about the evaluatee from the evaluator
score	floating	The total score that the evaluatee received from the evaluator.
comment_release	integer	Are this entry's comments release to be viewed by other users?
grade_release	integer	Are this entry's grades release to be viewed by other users?
grp_event_id	integer	Points to the group_events entry this entry is a part of.	group_events
event_id	integer	Points to the event that the above group_event entry is part of.	events
record_status	enum(A,I)	either 'A' or 'I', representing active or inactive. Not always checked by code.
creator_id	integer	the ID of the user who created this course.	users
created	date	a date entry for this entry's creation.
updater_id	integer	the last user's ID who changed this record.	users
modified	date	the last time of modification.

evaluation_rubrics_details

It seems that for each answer to a mixed evaluation question, and entry in this table is generated.

Column	Type	Description	Foreign Key to table...
id	integer	Primary_Key
evaluation_rubric_id	integer	The ID of the evaluation_rubric this question answer belongs too.
criteria_number	integer	The criteria number this entry belongs to. Not a foreign key ( :-/ Ugh... )
criteria_comment	text	A textual comment about the evaluatee according to the above creteria.
selected_lom	integer	The level-of-mastery the evaluator selected for the evaluatee.
grade	floating	The grade the above LOM gives the evaluatee.
record_status	enum(A,I)	either 'A' or 'I', representing active or inactive. Not always checked by code.
creator_id	integer	the ID of the user who created this course. Not used in this table (All 0's) (?)	users
created	date	a date entry for this entry's creation.
updater_id	integer	the last user's ID who changed this record. Not used in this table (All NULLS's)	users
modified	date	the last time of modification.

evaluation_simples

Every time an evaluator saves their progress in simple evaluation for an evaluatee, an entry is saved into this table.

Column	Type	Description	Foreign Key to table...
id	integer	Primary_Key
evaluator	integer	The user submitting the evaluation. They are evaluating other users.	users
evaluatee	integer	The user being evaluated.	users
score	integer	The score this evaluator gave the evaluatee.
eval_comment	text	A comment about the evaluatee by the evaluator.
release_status	integer	Unsure (?) (vs grade_release)
grp_event_id	integer	Points to the group_events entry this entry is a part of.	group_events
event_id	integer	Points to the event that the above group_event entry is part of.	events
date_submitted	date	The date the evaluation was submitted. (Does this just copy the info in evaluation_submissions ?)
grade_release	integer	Unsure (?) (vs grade_release)
record_status	enum(A,I)	either 'A' or 'I', representing active or inactive. Not always checked by code.
creator_id	integer	the ID of the user who created this course.	users
created	date	a date entry for this entry's creation.
updater_id	integer	the last user's ID who changed this record.	users
modified	date	the last time of modification.

evaluation_submissions

Column	Type	Description	Foreign Key to table...
id	integer	Primary_Key
event_id	integer	Points to the event that the above group_event entry is part of.	events
grp_event_id	integer	Points to the group_events entry this entry is a part of.	group_events
submitter_id	integer	The evaluator's user ID	users
submitted	integer	Apparently determined whether the evaluation was submitted or not. I don't see any 0's in the prod2009 database though. Might have something to do with re-releases. Not sure (?).
date_submitted	date	The date the evaluator submitted this evaluation.
record_status	enum(A,I)	either 'A' or 'I', representing active or inactive. Not always checked by code.
creator_id	integer	the ID of the user who created this record.	users
created	date	a date entry for this entry's creation.
updater_id	integer	the last user's ID who changed this record.	users
modified	date	the last time of modification.

event_template_types

I think this holds the the entries for the rubric types in iPeer. However, the code often assumes it knows the meanings of evaluation type id's (1,2,3,4), and hard-codes those into the code, sometimes ignoring this table.

Column	Type	Description	Foreign Key to table...
id	integer	Primary_Key
table_name	string	The name of the table that holds these types of evaluations.
model_name	string	The name of the model that connects the above table to cake.
display_for_selection	integer	A boolean integer. Tells if this type of evaluations should be available for selection when an instructor creates an event
record_status	enum(A,I)	either 'A' or 'I', representing active or inactive. Not always checked by code.
creator_id	integer	the ID of the user who created this record.	users
created	date	a date entry for this entry's creation.
updater_id	integer	the last user's ID who changed this record.	users
modified	date	the last time of modification

events

Column	Type	Description	Foreign Key to table...
id	integer	Primary_Key
title	string	The title of this event;
course_id	integer	The id of the course that this event will appear in	courses
description	text	A textual description of this event.
event_template_type_id	integer	The type of the evaluation.	event_template_types
template_id	integer	The ID of in the entry of this evaluation inside the particular evaluation type's table	simple_evaluations or rubrics or surveys or mixevals
self_eval	boolean integer	Does the user evaluate themselves as well?
com_req'	boolean integer	Are the comments required?
due_date	date	The due date for the event.
release_date_begin	date	The when the event will open - start showing up on the student's display.
release_date_end	date	The when the event will close - stop showing up on the student's display, even if it was completed.
record_status	enum(A,I)	either 'A' or 'I', representing active or inactive. Not always checked by code.
creator_id	integer	the ID of the user who created this record.	users
created	date	a date entry for this entry's creation.
updater_id	integer	the last user's ID who changed this record.	users
modified	date	the last time of modification

groups

Holds the members for each group in a class.

Column	Type	Description	Foreign Key to table...
id	integer	Primary_Key
group_num	integer	The Group number, no the ID. Not sure why we have it.
course_id	integer	The ID of the course this group belongs to	courses
record_status	enum(A,I)	either 'A' or 'I', representing active or inactive. Not always checked by code.
creator_id	integer	the ID of the user who created this record.	users
created	date	a date entry for this entry's creation.
updater_id	integer	the last user's ID who changed this record.	users
modified	date	the last time of modification

groups_members

Connects groups to group members (many to many relationship):

Column	Type	Description	Foreign Key to table...
id	integer	Primary_Key
group_id	integer	The ID of the group	groups
user_id	integer	The user ID of a group member	users

That's it :-)

group_events

Connects groups to events, holding other data about the group submission, etc. (many to many relationship).
I think that the extra columns are just to cache other data from the table, and display it to the user.

Column	Type	Description	Foreign Key to table...
id	integer	Primary_Key
group_id	integer	The ID of the group	groups
event_id	integer	The ID of the event	event
marked	string	One of not reviewed,to review, reviewed. Determined whether the instructor reviewed the comments for any offensive contents or the like. As I understand it, "Not reviewed" means not all submissions are yet complete from group members. "To review" implies that all submissions came in, but are not yet reviewed. "Review" means all submissions were turned in and reviewed by instructor.
grade	integer	I have no idea... NULL in all case I've seen so far. Unused (?)
grade_release_status	string	Can the users see the grades their group members gave them, or not? Some, None and All are possible.
grade_release_status	string	Can the users see the comments their group members gave them, or not? Just like above, Some, None and All are possible.
record_status	enum(A,I)	either 'A' or 'I', representing active or inactive. Not always checked by code.
creator_id	integer	the ID of the user who created tthis record.	users
created	date	a date entry for this entry's creation.
updater_id	integer	the last user's ID who changed this record.	users
modified	date	the last time of modification

mixevals

Contains a list of Mixed Evaluation (Templates - referenced by evaluation events)

Column	Type	Description	Foreign Key to table...
id	integer	Primary_Key
name	string	Title of the evaluation
total_marks	integer	The total amount of point possible in this evaluation per member.
zero_mark	enum(on,off)	Does the lowerst LOM count as a zero score?
total_question	integer	The total number of questions - both Lickert and Textual Answer.
lickert_question_max	integer	The number of Lickert(Rubric-type) questions.