>Hi,
>
>I just want to ask if the sys(2015) a reliable source of producing unique string. If it is, what is its basis for generating the unique string. I never encountered two same string generated by the sys(2015) function but this does not satisfy the thought that it might produce the same result once I use it too often on different methods of my program.
>
>A clear insight on this function will be of great help.
>
>thanks in advance...
Mike,
It's guaranteed to be unique as long as produced only from a single machine and provided system clock doesn't get backwards (in 100 years lifecyle).
It uses a schema based on system clock and you can't duplicate it on a single machine even if you call it with the fastest routine you can think of.
On a multiuser system it's duplicable. You might however add byte(s) to differentiate the value generated between stations.
Cetin