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Edexcel computer science 08/06/16

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Original post by stormblazer999
I think I got something similar in terms of the code - not sure though.

For the logical operations, there were 4 boxes - I got AND OR NOT AND


What did you put for computational methods (parallel and sequential)


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Obi_xtra
Original post by damndaniel2
i got select (id, description)
from tblname
where id = 'g'
order by (id) i thought it said to order by the id or something haha

also order by automatically means ascending so asc is not needed.

For the question on the back i did so bad. I did something like:

R1 = 0
r2 = 0
r3 = 0

rr1 = r1 + 1
rr2 = r2 + 2
rr3 = r3 + 4

if r5 = 0
print (int(r1*r2*r3))
else
print (int(r5 - 1))

something like that and i know this is defo wrong!

For the logical operations one i think i put:

And
or
not

i think lol wbu?


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or or and not
Original post by DamnDaniel2
Oh yh I put AND at the end as well haha. How many marks was that?


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4 delicious marks. Good job.
Original post by Obi_xtra
or or and not


Some people put that but the majority put AND OR NOT AND because:

How can the first box be OR? It needs to be a value that's larger than or equal to 1 AS WELL AS less than or equal to 5 in order to become a weekday.

And the third box is definitely NOT.
Original post by stormblazer999
4 delicious marks. Good job.


Hahaha thank you. For the truth table thing what did u say for the reason why people use it? I said it's used to find logical errors as they are hard to detect and fix because the error in the code occurred without the program realising it


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Original post by DamnDaniel2
What did you put for computational methods (parallel and sequential)


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Oh that was pretty okay.

I just said that sequential models execute line by line, from start to finish, in a linear fashion. Parallel models execute in parallel and simultaneously on multiple processing devices. Parallel models are more productive/efficient/faster than linear models because more than one task is being performed at the same time.
Original post by DamnDaniel2
Hahaha thank you. For the truth table thing what did u say for the reason why people use it? I said it's used to find logical errors as they are hard to detect and fix because the error in the code occurred without the program realising it


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Erm, it didn't ask why a TRACE TABLE is used. It asked the PURPOSE OF THE ALGORITHM. I forgot what I put in as an answer though.
Original post by stormblazer999
Erm, it didn't ask why a TRACE TABLE is used. It asked the PURPOSE OF THE ALGORITHM. I forgot what I put in as an answer though.


Yh sorry that's what I meant. And loool I always get mixed up with a trace table and truth table


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Original post by stormblazer999
Oh that was pretty okay.

I just said that sequential models execute line by line, from start to finish, in a linear fashion. Parallel models execute in parallel and simultaneously on multiple processing devices. Parallel models are more productive/efficient/faster than linear models because more than one task is being performed at the same time.


Yup that's what I put, however, I didn't talk about multiprocessing devices


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Original post by stormblazer999
Erm, it didn't ask why a TRACE TABLE is used. It asked the PURPOSE OF THE ALGORITHM. I forgot what I put in as an answer though.


Also for the pseudocode one where you had to change bits of the pseudocode to reach the requirements what did you put? I created a constant variable and made two other variables called Area and Area2 and set them to 0. I added an input as well cos we want it to work with every number


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Original post by DamnDaniel2
Yh sorry that's what I meant. And loool I always get mixed up with a trace table and truth table


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Well, either way tbh, I don't think you'll get the mark because I don't think finding logical errors had to do with the algorithm. Sorry
Original post by stormblazer999
Well, either way tbh, I don't think you'll get the mark because I don't think finding logical errors had to do with the algorithm. Sorry


I just checked the internet and on various sites it says that I got it correct lol :smile:


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Original post by DamnDaniel2
I just checked the internet and on various sites it says that I got it correct lol :smile:


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Oh really? Well done man. Sorry for reducing your confidence.
Original post by stormblazer999
Oh really? Well done man. Sorry for reducing your confidence.


Hahaha no it's fine :smile: Also for the codes do you think I got like nearly full marks for them or even full marks?


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Original post by DamnDaniel2
Hahaha no it's fine :smile: Also for the codes do you think I got like nearly full marks for them or even full marks?


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I would say full marks IMO. They seem like they covered everything.
Original post by stormblazer999
I would say full marks IMO. They seem like they covered everything.


Oh hopefully! I really want that A* hahaha. I really need someone to create an unofficial mark scheme but it seems like barely anyone does edexcel computer science!


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Reply 56
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Synx-b
3
What did you guys get for the trace table question? I think i did it right but Im not quite sure
(edited 7 years ago)
Reply 57
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Synx-b
3
Original post by DamnDaniel2
Oh hopefully! I really want that A* hahaha. I really need someone to create an unofficial mark scheme but it seems like barely anyone does edexcel computer science!


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Yeah, last year only about 540 people in the entire country did edexcel computer science :/
Reply 58
Avatar for Synx-b
Synx-b
3
Original post by DamnDaniel2
Oh hopefully! I really want that A* hahaha. I really need someone to create an unofficial mark scheme but it seems like barely anyone does edexcel computer science!


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Yeah, last year only about 540 people in the entire country did edexcel computer science :/

Subject Statistics from last year: http://qualifications.pearson.com/content/dam/pdf/Support/Grade-statistics/GCSE/June_2015_(Provisional)_-_GCSE_Full_Course_Specifications_(codes_starting_with_1).pdf

First page where it specifies Comp Science
Original post by Synx-b
What did you guys get for the trace table question? I think i did it right but Im not quite sure


I got like 1, 2, 4 and 5? Then 2, 3... Something like that? Not sure. What did you get?


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