Data dictionary - Calculation Question (1 Viewer)

[swagmeister]

We skipped this in class, just hoping someone can clarify the working out for me?

Cheers,
swagmeister

 

[sPaidaman]

Don't u just add the numbers in the size column and get 60 bytes
Then multiply this by the number of records 60x10000 =600000 bytes
1024bytes =1kb
Therefore 600000bytes is 600Kb approx


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[pkisbest]

I believe that is correct Spaidaman. Each character is 1 byte from my knowledge. So add the characters (in this case 60 bytes), then times it by the numbers of records (60x10000) which gets your 600000 bytes, then convert it to Kb (divide by 1024) which equals 585Kb (Closest is 600Kb)

Please note: The question asks what is the approximate amount of memory, so technically anything above it can be correct (as 6000 and 60000 would still fit this DB into them), but for answers sake the answer will be 600Kb