Question

So I found out that the length column says “Length” is 4, and precision is 10 :

Col. name: SurveyNumber
type : int
computed: no
Length: 4
Precision: 10   

And it has numbers like 19350 in it. Why is length called 4 and it has 5-digit numbers:?

Answer 1

4 byte !

its not a 4 digits.

4 byte = 4*8 = 32 bits.

so it can hold 2^32-1 value number

( if you have a negative number so its half value – symetric (-1) to the zero. – cause zero also counts.)

min = -2,147,483,648 max=2,147,483,647

2^32 = 4294967296

divide by 2: = 2147483648

now step up 2^32-1 times

so you are here at : 2,147,483,647