Re:The German Tank Problem (2010)
by herge on Friday November 06, 2015 @12:49PM
(#10520763)
This also matters for user visible ids in applications, like user ids, etc. It's really easy to say your competitor has only 2000 users if you sign up to their service and your id is 1992.
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Re:The German Tank Problem (2010)
by brianwawok on Saturday November 07, 2015 @07:36AM
(#10524614)
pks are sequential. If you sign up as 1992 they have 1992 customers.
Re:The German Tank Problem (2010)
by jeremysmyth on Monday November 09, 2015 @04:39AM
(#10532095)
pks are sequential. If you sign up as 1992 they have 1992 customers.
Does not follow. Only follows if:
- PKs are sequential
- and PKs are non-zero non-negative
- and they have not been reset at any point (or the sequence generation otherwise modified)
- and all preceding PKs are those of customers (as opposed to test values, invalid PKs due to a sequence number that was generated but the registration did not complete, or customers who have since left the service)
If PKs are sequential and natural and the sequence has not been modified, then you know there are no more than 1992 customers. Not exactly 1992.