0
votes
1answer
120 views

how I can create check sum to validate no changes at int string pairs on table

Business case is. 1)Users print document on paper 2)users carry printed paper to Boss, Boss sing on paper 3)after that users going to administrator to digitally sign that paper. My task is to help ...
4
votes
1answer
92 views

How can I enforce data integrity in this model with a M:2 relationship?

This model describes a part of my database (somewhat simplified): A "Tumor model" describes an experiment a researcher does on animals. The "Animal line" is a breed of lab animals, e.g. a Black 6 ...
8
votes
1answer
262 views

What is the actual lowest possible positive REAL number

MSDN says that the range of REAL numbers is - 3.40E + 38 to -1.18E - 38, 0 and 1.18E - 38 to 3.40E + 38. Apparently the true lower limit is much lower. The following script populates a REAL column ...