UML Modeling Techniques > Data modeling > Storage Mapper > Generate prime keys > Generating prime keys from unique attributes (Storage Mapper)
  
Generating prime keys from unique attributes (Storage Mapper)
Generating prime keys from unique attributes is the primary method of generating prime keys.
To generate prime keys from unique attributes:
Check the Unique check box.
If more than one attribute is marked as unique, after mapping the first encountered attribute in the list becomes the prime column.