This book would not have been possible without the support and patience of Paulina Montes de Oca. Thanks for being by my side at every step of this journey (and sorry for all the trouble).

I would also like to thank my lifelong QlikView partners, José ángel del Río, Carlos Reyes, and Jaime Aguilar, who have helped me more times than I care to remember. And thanks to my comrade, Oscar Go?i, whose keen eye helped me make the best out of this book.

I am also grateful to my friends Dante de Gante, Arturo Moreno, Paulina Novaro, Ilse Van Damme, and Raúl Pardo, who have given me their full support through these years.

But above everything else, I'd like to thank my mentor, Karl Pover, whose advice has helped me grow both personally and professionally. It's an honor to work with you. Thanks for all your help, I really appreciate it. But don't feel so great, you're not thaaaat important.