Class Registration » question

New Analysis Announced for Class Action Antitrust Cases, Bringing Clarity to Long-Unsettled Certification Question

Tue, 11 May 2010 18:08:36 +0000

New Analysis Announced for Class Action Antitrust Cases, Bringing Clarity to Long-Unsettled Certification Question
BOSTON—-New research to be announced next month from a group of leading thinkers in business, law, and economics holds the promise of bringing analytical clarity to a pivotal yet long-unsettled question arising in antitrust class action litigation.

school question?

Mon, 12 Apr 2010 15:26:42 +0000

I handed in my registration for high school in january (when they were due) i got a letter on tuesday saying that i didnt hand it in. I called back and told them i turned it into the office, she looked and found it and told me she’d put it into the system. what are the odds im not going to get the top classes that i chose?
im going to Cortez (phoenix, az)

Microeconomics: Question 2- Public Goods and Common Resources I?

Wed, 27 Jan 2010 11:37:14 +0000

6. Suppose your economics professor decides to conduct an experiment regarding the effects of different grading policies on the class average. He plans to teach two sections of the same economics course next semester. In each class, an exam score of 90 or above is an A, a score of between 80 and 90 is a B, and so forth. To determine the number for the exam score, the professor uses two different systems. In one class, each student will receive the number that he or she scores on the final exam. In the other class, each student will receive a number equal to the average score on the exam for the entire class. All students know the grading policies at the time of registration and students can choose which class they attend.

True or False: Assume that both classes have large enrollments. The class with the higher average grade is likely to be the one in which students receive their own numerical score on the exam.

A. True

B. False

ACT registration question. Is Computer Programming/ Internet Lit a Computer Science class?

Sat, 12 Dec 2009 11:04:43 +0000

I need to know for filling out my ACT registration, it is due tomorrow. The class taught in depth programming in Visual Basic and did an in depth unit on HTML.
Also, is Personal Finance considered an Economics or Consumer Economics class?

database design question?

Fri, 09 Oct 2009 16:22:04 +0000

hi i have a db design question:

i was designing a class registration system with the following relationship:

student <--one to many--> registration <-- many to one --> class

while i was creating the db tables, i came across this field which i’m not sure where it should belong. there is what you call students on hold or students in the waiting list. there are certain reasons why this happen. one is that the maximum number of students allowed for a class is reached so subsequent registrations cannot anymore be accommodated. thus those registrations are said to be in the waiting list.

[B]Column indicator[/B]
i was thinking. should i just add a column in the registration table to indicate that the a registration record is in waiting list, e.i:

[CODE]
registration_id fk_student_id fk_class_id is_in_waiting_list
1 3 2 N
2 1 1 N
3 2 2 Y
[/CODE]

now i say record of registration_id 3 is an unqualified entry of the registration table ‘coz it cannot fully utilize of the relationship the table has. take for example, registrations is associated with the payments table:

registration <--many to many--> payment

and say that a registration can be associated to any number of payment (this is used for paying in installment). now there is a constraint that waiting list entries cannot be associated to any payment.

[B]Creating a separate table:[/B]
now, i was having problems. how can i insure that this policy is enforced. i mean, i don’t think the db design is good enough to enforce is rule. another implementation possible is to create a separate table for the waiting list entries, thus:

student <-- one to many --> waiting_list <-- many to one --> class
student <-- one to many --> registration <-- many to one --> class

but my problem is it would be too ackward to work with two tables. suppose i want to count the number of registration regardless whether it was wait listed or not. then i have to query the two tables.

another problem, is that when a waiting list registration is approved. it should be moved to the registration table. well, that’s good ‘coz i could retain the entry in the waiting list table and remember that the registration was previously wait listed. but is the analysis right? that two tables should be maintained instead of adding an additional column to indicate a record is wait listed as discussed in the ‘Column indicator’ section.
whoops, sorry about the contents of the table contained by the [code][/code] tags. each column is associated with their corresponding header. i just can’t edit them out properly in here. thanks.