Hi,
It should allow NULL. All DBs should allow NULL else they dont represent business cases.
I think it is in the mind of the designer to put 1111-11-11 just to be on the safer side. There may be cases where the designer had really captured all requirements and inferred that this design is best.
Cheers,
Raja
Hi,
It should allow NULL. All DBs should allow NULL else they dont represent business cases.
I think it is in the mind of the designer to put 1111-11-11 just to be on the safer side. There may be cases where the designer had really captured all requirements and inferred that this design is best.
Cheers,
Raja