when i am creating a primary key in database level automatically it will create a primary index
and it will restrict the duplicate and null values
but here after assigning the index to primary index still it accepts the null values (if the prop what u said set to no)
What i understood from u r reply is:
Here we are using primary index to fetch the data quickly from X++
By default it will not add any more costraint to that field… is this ?