scientific computing - How to store "smaller than", equals and "larger than" in database -

I need to store scientific information in a database (SQL Server). I

Example: < Patient ID: 99 mutation rate: 3%

Patient income: 456 Radiation rate: 10%

Patient ID: 123 mutation rate: and lieutenant 3%

/ P>

I should be able to sort and filter

thanks for your help

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How to add a 3 column for a clarity int About the area?

0 = less than = 1 = for less or equal = 2 = equal to = 3 = = or = 4 = big =

equals =