AQA COMP3 - 14 June 2010

Yh i agree with you too mate, the book is totally crap. I remember while revising, in just the first 4 units i found like 13 mistakes or something ridiculous like that!

What did you guys get for the degree of relations question, the one to do with making links with:

Subscription Customer and Magazine?

The degrees I got as many-to-many between customer and magazine, one-to-many between customer and subscription, and one to many between magazine and subscription.

I got the same.

Anyone got a copy of the paper uploaded? I want to see it again...

I managed to finish it in 45 mins then left after hour and a half when the classics exam finished......

Anyonee got the paper to upload?

Please make a mark scheme someone! I hate not knowing how I did!

When in college tomorrow someone should grab the paper and quickly scan it or jot down the questions...

I'll try but got maths exams...

Can you DO that? We're not even allowed to look at the things once we're done.

(Then again, the teacher we had last year, who came in for a revision day this year, is a nationally known expert, and wrote the textbook! :P - so maybe we had a slight advantage in that we were being taught by an actual GOD).

Well, it'd be a blank one anyway...

Not gonna get my own exam paper and add some more stuff to it...

Although i probs won't be able to do it....

Was this Dr Bond? Our teacher praised that guy, and his name seemed to be in all of our textbooks!

I thought that was insanely easy compared to how it could have been! :P Everyone in our school did it in about 1.30 hours (Then again, the teacher we had last year, who came in for a revision day this year, is a nationally known expert, and wrote the textbook! :P - so maybe we had a slight advantage in that we were being taught by an actual GOD). My main problem was not having enough space in the darned essay Qs - I was writing half-pages for 2-mark Qs!!??!! :P

EDIT: Also, choilfc, yeah the parity bit was 1, and I reckon the other mark was just for knowing that the start and stop bits have to be different, (cos they don't tell you what the idle state of the line is) - so as long as start and stop were different you'll get both marks.

Sorry, but the book is utterly terrible.

What were the start and stop bits?
I got the even parity bit as 1 as there were an odd number of 1's.

I just assumed that the parity bit was different to the stop and the stop was different to the start so i got stop as 0 and start as 1? That was a total guess though...

was the BNF like this

<integer>= +|-<whole number>
<whole number> = <number>|<number><whole number>
<number> = 1|2|3|4|5|6|7|8|9

For the BCN question I had the expression:

<sign> := +|-

and then

<integer> := <sign><whole number> | <whole number>

(with all the other stuff about whole numbers and digits too).

Would that get the marks?