Hi !

I'll make a brief introduction of myself, because I'm in a hurry. I'll make a post for my problem in a few minutes.

I am learner in computer science in Switzerland. I am passioned for databases normalization. I actually know the nine normal forms. The reading of "Temporal data and the relational model" of Chris J. Date, Hugh Darwen, and Nikos A. Lorentzos, was a great discover for me.

Thank you for your welcome.